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+ <span class="siteSubtitle">Run on Thu May 31 16:49:15 2012<br />Reported on Thu May 31 16:51:28 2012</span>
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+<div style="position: absolute; left: 0px; top: 100%; width: 100%; height: 1%; z-index: -1; background-color: rgb(0, 68, 187); "></div>
+</div>
+
+<div class="body_content"><br />
+<table class="file_summary"><tr><td class="h">Filename</td><td align="left"><a href="file:///Users/edenc/perl5/lib/perl5/darwin-multi-2level/Variable/Magic.pm">/Users/edenc/perl5/lib/perl5/darwin-multi-2level/Variable/Magic.pm</a></td></tr>
+<tr><td class="h">Statements</td><td align="left">Executed 30 statements in 1.23ms</td></tr></table>
+
+ <table id="subs_table" border="1" cellpadding="0" class="tablesorter">
+ <caption>Subroutines</caption>
+ <thead>
+ <tr>
+ <th>Calls</th>
+ <th><span title="Number of Places sub is called from">P</span></th>
+ <th><span title="Number of Files sub is called from">F</span></th>
+ <th>Exclusive<br />Time</th>
+ <th>Inclusive<br />Time</th>
+ <th>Subroutine</th>
+ </tr>
+ </thead>
+ <tbody>
+<tr><td class="c0">208</td><td class="c3">1</td><td class="c3">1</td><td class="c0"><span title="0.0%">1.48ms</span></td><td class="c0"><span title="0.0%">2.10ms</span></td><td class="sub_name"><span style="display: none;">Variable::Magic::::cast</span>Variable::Magic::<a href="Variable-Magic-pm-377-block.html#Variable__Magic__cast">cast</a> (xsub)</span></td></tr>
+<tr><td class="c0">215</td><td class="c3">1</td><td class="c3">1</td><td class="c0"><span title="0.0%">367µs</span></td><td class="c0"><span title="0.0%">367µs</span></td><td class="sub_name"><span style="display: none;">Variable::Magic::::getdata</span>Variable::Magic::<a href="Variable-Magic-pm-377-block.html#Variable__Magic__getdata">getdata</a> (xsub)</span></td></tr>
+<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">39µs</span></td><td class="c3"><span title="0.0%">39µs</span></td><td class="sub_name"><span style="display: none;">Variable::Magic::::_wizard</span>Variable::Magic::<a href="Variable-Magic-pm-377-block.html#Variable__Magic___wizard">_wizard</a> (xsub)</span></td></tr>
+<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">33µs</span></td><td class="c3"><span title="0.0%">71µs</span></td><td class="sub_name"><span style="display: none;">Variable::Magic::::wizard</span>Variable::Magic::<a href="Variable-Magic-pm-377-block.html#321">wizard</a></span></td></tr>
+<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">32µs</span></td><td class="c3"><span title="0.0%">32µs</span></td><td class="sub_name"><span style="display: none;">Variable::Magic::::BEGIN@19</span>Variable::Magic::<a href="Variable-Magic-pm-377-block.html#19">BEGIN@19</a></span></td></tr>
+<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">21µs</span></td><td class="c3"><span title="0.0%">21µs</span></td><td class="sub_name"><span style="display: none;">Variable::Magic::::BEGIN@3</span>Variable::Magic::<a href="Variable-Magic-pm-377-block.html#3">BEGIN@3</a></span></td></tr>
+<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">14µs</span></td><td class="c2"><span title="0.0%">110µs</span></td><td class="sub_name"><span style="display: none;">Variable::Magic::::BEGIN@605</span>Variable::Magic::<a href="Variable-Magic-pm-377-block.html#605">BEGIN@605</a></span></td></tr>
+<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">10µs</span></td><td class="c0"><span title="0.0%">344µs</span></td><td class="sub_name"><span style="display: none;">Variable::Magic::::BEGIN@203</span>Variable::Magic::<a href="Variable-Magic-pm-377-block.html#203">BEGIN@203</a></span></td></tr>
+<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">9µs</span></td><td class="c3"><span title="0.0%">13µs</span></td><td class="sub_name"><span style="display: none;">Variable::Magic::::BEGIN@5</span>Variable::Magic::<a href="Variable-Magic-pm-377-block.html#5">BEGIN@5</a></span></td></tr>
+<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">7µs</span></td><td class="c3"><span title="0.0%">15µs</span></td><td class="sub_name"><span style="display: none;">Variable::Magic::::BEGIN@6</span>Variable::Magic::<a href="Variable-Magic-pm-377-block.html#6">BEGIN@6</a></span></td></tr>
+</tbody></table>
+ Call graph for these subroutines as a
+ <a href="http://en.wikipedia.org/wiki/Graphviz">Graphviz</a>
+ <a href="Users-edenc-perl5-lib-perl5-darwin-multi-2level-Variable-Magic-pm.dot">dot language file</a>.
+
+ <table border="1" cellpadding="0">
+ <thead>
+ <tr><th>Line</th>
+ <th><span title="Number of statements executed">State<br />ments</span></th>
+ <th><span title="Time spend executing statements on the line,
+ excluding time spent executing statements in any called subroutines">Time<br />on line</span></th>
+ <th><span title="Number of subroutines calls">Calls</span></th>
+ <th><span title="Time spent in subroutines called (inclusive)">Time<br />in subs</span></th>
+ <th class="left_indent_header">Code</th>
+ </tr>
+
+ </thead>
+ <tbody>
+ <tr><td class="h"><a name="1"></a>1</td><td></td><td></td><td></td><td></td><td class="s">package Variable::Magic;</td></tr>
+<tr><td class="h"><a name="2"></a>2</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="3"></a>3</td><td class="c1">2</td><td class="c1"><span title="Avg 22µs">44µs</span></td><td class="c3">1</td><td class="c3">21µs</td><td class="s"><div class="calls"><div class="calls_in"># spent 21µs within Variable::Magic::BEGIN@3 which was called:
+# once (21µs+0s) by B::Hooks::EndOfScope::BEGIN@14 at <a href="Variable-Magic-pm-377-block.html#3">line 3</a></div></div>use 5.008;<div class="calls"><div class="calls_out"># spent 21µs making 1 call to <a href="Variable-Magic-pm-377-block.html#3">Variable::Magic::BEGIN@3</a></div></div></td></tr>
+<tr><td class="h"><a name="4"></a>4</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="5"></a>5</td><td class="c1">2</td><td class="c3"><span title="Avg 11µs">23µs</span></td><td class="c1">2</td><td class="c3">17µs</td><td class="s"><div class="calls"><div class="calls_in"># spent 13µs (9+4) within Variable::Magic::BEGIN@5 which was called:
+# once (9µs+4µs) by B::Hooks::EndOfScope::BEGIN@14 at <a href="Variable-Magic-pm-377-block.html#5">line 5</a></div></div>use strict;<div class="calls"><div class="calls_out"># spent 13µs making 1 call to <a href="Variable-Magic-pm-377-block.html#5">Variable::Magic::BEGIN@5</a>
+# spent 4µs making 1 call to <a href="strict-pm-3-block.html#34">strict::import</a></div></div></td></tr>
+<tr><td class="h"><a name="6"></a>6</td><td class="c1">2</td><td class="c0"><span title="Avg 43µs">86µs</span></td><td class="c1">2</td><td class="c3">22µs</td><td class="s"><div class="calls"><div class="calls_in"># spent 15µs (7+7) within Variable::Magic::BEGIN@6 which was called:
+# once (7µs+7µs) by B::Hooks::EndOfScope::BEGIN@14 at <a href="Variable-Magic-pm-377-block.html#6">line 6</a></div></div>use warnings;<div class="calls"><div class="calls_out"># spent 15µs making 1 call to <a href="Variable-Magic-pm-377-block.html#6">Variable::Magic::BEGIN@6</a>
+# spent 7µs making 1 call to <a href="warnings-pm-2-block.html#386">warnings::import</a></div></div></td></tr>
+<tr><td class="h"><a name="7"></a>7</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="8"></a>8</td><td></td><td></td><td></td><td></td><td class="s">=head1 NAME</td></tr>
+<tr><td class="h"><a name="9"></a>9</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="10"></a>10</td><td></td><td></td><td></td><td></td><td class="s">Variable::Magic - Associate user-defined magic to variables from Perl.</td></tr>
+<tr><td class="h"><a name="11"></a>11</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="12"></a>12</td><td></td><td></td><td></td><td></td><td class="s">=head1 VERSION</td></tr>
+<tr><td class="h"><a name="13"></a>13</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="14"></a>14</td><td></td><td></td><td></td><td></td><td class="s">Version 0.48</td></tr>
+<tr><td class="h"><a name="15"></a>15</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="16"></a>16</td><td></td><td></td><td></td><td></td><td class="s">=cut</td></tr>
+<tr><td class="h"><a name="17"></a>17</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="18"></a>18</td><td class="c3">1</td><td class="c3"><span title="Avg 100ns">100ns</span></td><td></td><td></td><td class="s">our $VERSION;</td></tr>
+<tr><td class="h"><a name="19"></a>19</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 32µs within Variable::Magic::BEGIN@19 which was called:
+# once (32µs+0s) by B::Hooks::EndOfScope::BEGIN@14 at <a href="Variable-Magic-pm-377-block.html#21">line 21</a></div></div>BEGIN {</td></tr>
+<tr><td class="h"><a name="20"></a>20</td><td class="c3">1</td><td class="c3"><span title="Avg 5µs">5µs</span></td><td></td><td></td><td class="s"> $VERSION = '0.48';</td></tr>
+<tr><td class="h"><a name="21"></a>21</td><td class="c3">1</td><td class="c0"><span title="Avg 104µs">104µs</span></td><td class="c3">1</td><td class="c3">32µs</td><td class="s">}<div class="calls"><div class="calls_out"># spent 32µs making 1 call to <a href="Variable-Magic-pm-377-block.html#19">Variable::Magic::BEGIN@19</a></div></div></td></tr>
+<tr><td class="h"><a name="22"></a>22</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="23"></a>23</td><td></td><td></td><td></td><td></td><td class="s">=head1 SYNOPSIS</td></tr>
+<tr><td class="h"><a name="24"></a>24</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="25"></a>25</td><td></td><td></td><td></td><td></td><td class="s"> use Variable::Magic qw<wizard cast VMG_OP_INFO_NAME>;</td></tr>
+<tr><td class="h"><a name="26"></a>26</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="27"></a>27</td><td></td><td></td><td></td><td></td><td class="s"> { # A variable tracer</td></tr>
+<tr><td class="h"><a name="28"></a>28</td><td></td><td></td><td></td><td></td><td class="s"> my $wiz = wizard(</td></tr>
+<tr><td class="h"><a name="29"></a>29</td><td></td><td></td><td></td><td></td><td class="s"> set => sub { print "now set to ${$_[0]}!\n" },</td></tr>
+<tr><td class="h"><a name="30"></a>30</td><td></td><td></td><td></td><td></td><td class="s"> free => sub { print "destroyed!\n" },</td></tr>
+<tr><td class="h"><a name="31"></a>31</td><td></td><td></td><td></td><td></td><td class="s"> );</td></tr>
+<tr><td class="h"><a name="32"></a>32</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="33"></a>33</td><td></td><td></td><td></td><td></td><td class="s"> my $a = 1;</td></tr>
+<tr><td class="h"><a name="34"></a>34</td><td></td><td></td><td></td><td></td><td class="s"> cast $a, $wiz;</td></tr>
+<tr><td class="h"><a name="35"></a>35</td><td></td><td></td><td></td><td></td><td class="s"> $a = 2; # "now set to 2!"</td></tr>
+<tr><td class="h"><a name="36"></a>36</td><td></td><td></td><td></td><td></td><td class="s"> } # "destroyed!"</td></tr>
+<tr><td class="h"><a name="37"></a>37</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="38"></a>38</td><td></td><td></td><td></td><td></td><td class="s"> { # A hash with a default value</td></tr>
+<tr><td class="h"><a name="39"></a>39</td><td></td><td></td><td></td><td></td><td class="s"> my $wiz = wizard(</td></tr>
+<tr><td class="h"><a name="40"></a>40</td><td></td><td></td><td></td><td></td><td class="s"> data => sub { $_[1] },</td></tr>
+<tr><td class="h"><a name="41"></a>41</td><td></td><td></td><td></td><td></td><td class="s"> fetch => sub { $_[2] = $_[1] unless exists $_[0]->{$_[2]}; () },</td></tr>
+<tr><td class="h"><a name="42"></a>42</td><td></td><td></td><td></td><td></td><td class="s"> store => sub { print "key $_[2] stored in $_[-1]\n" },</td></tr>
+<tr><td class="h"><a name="43"></a>43</td><td></td><td></td><td></td><td></td><td class="s"> copy_key => 1,</td></tr>
+<tr><td class="h"><a name="44"></a>44</td><td></td><td></td><td></td><td></td><td class="s"> op_info => VMG_OP_INFO_NAME,</td></tr>
+<tr><td class="h"><a name="45"></a>45</td><td></td><td></td><td></td><td></td><td class="s"> );</td></tr>
+<tr><td class="h"><a name="46"></a>46</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="47"></a>47</td><td></td><td></td><td></td><td></td><td class="s"> my %h = (_default => 0, apple => 2);</td></tr>
+<tr><td class="h"><a name="48"></a>48</td><td></td><td></td><td></td><td></td><td class="s"> cast %h, $wiz, '_default';</td></tr>
+<tr><td class="h"><a name="49"></a>49</td><td></td><td></td><td></td><td></td><td class="s"> print $h{banana}, "\n"; # "0" (there is no 'banana' key in %h)</td></tr>
+<tr><td class="h"><a name="50"></a>50</td><td></td><td></td><td></td><td></td><td class="s"> $h{pear} = 1; # "key pear stored in helem"</td></tr>
+<tr><td class="h"><a name="51"></a>51</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
+<tr><td class="h"><a name="52"></a>52</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="53"></a>53</td><td></td><td></td><td></td><td></td><td class="s">=head1 DESCRIPTION</td></tr>
+<tr><td class="h"><a name="54"></a>54</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="55"></a>55</td><td></td><td></td><td></td><td></td><td class="s">Magic is Perl's way of enhancing variables.</td></tr>
+<tr><td class="h"><a name="56"></a>56</td><td></td><td></td><td></td><td></td><td class="s">This mechanism lets the user add extra data to any variable and hook syntactical operations (such as access, assignment or destruction) that can be applied to it.</td></tr>
+<tr><td class="h"><a name="57"></a>57</td><td></td><td></td><td></td><td></td><td class="s">With this module, you can add your own magic to any variable without having to write a single line of XS.</td></tr>
+<tr><td class="h"><a name="58"></a>58</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="59"></a>59</td><td></td><td></td><td></td><td></td><td class="s">You'll realize that these magic variables look a lot like tied variables.</td></tr>
+<tr><td class="h"><a name="60"></a>60</td><td></td><td></td><td></td><td></td><td class="s">It's not surprising, as tied variables are implemented as a special kind of magic, just like any 'irregular' Perl variable : scalars like C<$!>, C<$(> or C<$^W>, the C<%ENV> and C<%SIG> hashes, the C<@ISA> array, C<vec()> and C<substr()> lvalues, L<threads::shared> variables...</td></tr>
+<tr><td class="h"><a name="61"></a>61</td><td></td><td></td><td></td><td></td><td class="s">They all share the same underlying C API, and this module gives you direct access to it.</td></tr>
+<tr><td class="h"><a name="62"></a>62</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="63"></a>63</td><td></td><td></td><td></td><td></td><td class="s">Still, the magic made available by this module differs from tieing and overloading in several ways :</td></tr>
+<tr><td class="h"><a name="64"></a>64</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="65"></a>65</td><td></td><td></td><td></td><td></td><td class="s">=over 4</td></tr>
+<tr><td class="h"><a name="66"></a>66</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="67"></a>67</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="68"></a>68</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="69"></a>69</td><td></td><td></td><td></td><td></td><td class="s">It isn't copied on assignment.</td></tr>
+<tr><td class="h"><a name="70"></a>70</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="71"></a>71</td><td></td><td></td><td></td><td></td><td class="s">You attach it to variables, not values (as for blessed references).</td></tr>
+<tr><td class="h"><a name="72"></a>72</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="73"></a>73</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="74"></a>74</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="75"></a>75</td><td></td><td></td><td></td><td></td><td class="s">It doesn't replace the original semantics.</td></tr>
+<tr><td class="h"><a name="76"></a>76</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="77"></a>77</td><td></td><td></td><td></td><td></td><td class="s">Magic callbacks usually get triggered before the original action takes place, and can't prevent it from happening.</td></tr>
+<tr><td class="h"><a name="78"></a>78</td><td></td><td></td><td></td><td></td><td class="s">This also makes catching individual events easier than with C<tie>, where you have to provide fallbacks methods for all actions by usually inheriting from the correct C<Tie::Std*> class and overriding individual methods in your own class.</td></tr>
+<tr><td class="h"><a name="79"></a>79</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="80"></a>80</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="81"></a>81</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="82"></a>82</td><td></td><td></td><td></td><td></td><td class="s">It's type-agnostic.</td></tr>
+<tr><td class="h"><a name="83"></a>83</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="84"></a>84</td><td></td><td></td><td></td><td></td><td class="s">The same magic can be applied on scalars, arrays, hashes, subs or globs.</td></tr>
+<tr><td class="h"><a name="85"></a>85</td><td></td><td></td><td></td><td></td><td class="s">But the same hook (see below for a list) may trigger differently depending on the the type of the variable.</td></tr>
+<tr><td class="h"><a name="86"></a>86</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="87"></a>87</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="88"></a>88</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="89"></a>89</td><td></td><td></td><td></td><td></td><td class="s">It's mostly invisible at the Perl level.</td></tr>
+<tr><td class="h"><a name="90"></a>90</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="91"></a>91</td><td></td><td></td><td></td><td></td><td class="s">Magical and non-magical variables cannot be distinguished with C<ref>, C<tied> or another trick.</td></tr>
+<tr><td class="h"><a name="92"></a>92</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="93"></a>93</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="94"></a>94</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="95"></a>95</td><td></td><td></td><td></td><td></td><td class="s">It's notably faster.</td></tr>
+<tr><td class="h"><a name="96"></a>96</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="97"></a>97</td><td></td><td></td><td></td><td></td><td class="s">Mainly because perl's way of handling magic is lighter by nature, and because there's no need for any method resolution.</td></tr>
+<tr><td class="h"><a name="98"></a>98</td><td></td><td></td><td></td><td></td><td class="s">Also, since you don't have to reimplement all the variable semantics, you only pay for what you actually use.</td></tr>
+<tr><td class="h"><a name="99"></a>99</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="100"></a>100</td><td></td><td></td><td></td><td></td><td class="s">=back</td></tr>
+<tr><td class="h"><a name="101"></a>101</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="102"></a>102</td><td></td><td></td><td></td><td></td><td class="s">The operations that can be overloaded are :</td></tr>
+<tr><td class="h"><a name="103"></a>103</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="104"></a>104</td><td></td><td></td><td></td><td></td><td class="s">=over 4</td></tr>
+<tr><td class="h"><a name="105"></a>105</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="106"></a>106</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="107"></a>107</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="108"></a>108</td><td></td><td></td><td></td><td></td><td class="s">C<get></td></tr>
+<tr><td class="h"><a name="109"></a>109</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="110"></a>110</td><td></td><td></td><td></td><td></td><td class="s">This magic is invoked when the variable is evaluated.</td></tr>
+<tr><td class="h"><a name="111"></a>111</td><td></td><td></td><td></td><td></td><td class="s">It is never called for arrays and hashes.</td></tr>
+<tr><td class="h"><a name="112"></a>112</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="113"></a>113</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="114"></a>114</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="115"></a>115</td><td></td><td></td><td></td><td></td><td class="s">C<set></td></tr>
+<tr><td class="h"><a name="116"></a>116</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="117"></a>117</td><td></td><td></td><td></td><td></td><td class="s">This one is triggered each time the value of the variable changes.</td></tr>
+<tr><td class="h"><a name="118"></a>118</td><td></td><td></td><td></td><td></td><td class="s">It is called for array subscripts and slices, but never for hashes.</td></tr>
+<tr><td class="h"><a name="119"></a>119</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="120"></a>120</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="121"></a>121</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="122"></a>122</td><td></td><td></td><td></td><td></td><td class="s">C<len></td></tr>
+<tr><td class="h"><a name="123"></a>123</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="124"></a>124</td><td></td><td></td><td></td><td></td><td class="s">This magic is a little special : it is called when the 'size' or the 'length' of the variable has to be known by Perl.</td></tr>
+<tr><td class="h"><a name="125"></a>125</td><td></td><td></td><td></td><td></td><td class="s">Typically, it's the magic involved when an array is evaluated in scalar context, but also on array assignment and loops (C<for>, C<map> or C<grep>).</td></tr>
+<tr><td class="h"><a name="126"></a>126</td><td></td><td></td><td></td><td></td><td class="s">The callback has then to return the length as an integer.</td></tr>
+<tr><td class="h"><a name="127"></a>127</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="128"></a>128</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="129"></a>129</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="130"></a>130</td><td></td><td></td><td></td><td></td><td class="s">C<clear></td></tr>
+<tr><td class="h"><a name="131"></a>131</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="132"></a>132</td><td></td><td></td><td></td><td></td><td class="s">This magic is invoked when the variable is reset, such as when an array is emptied.</td></tr>
+<tr><td class="h"><a name="133"></a>133</td><td></td><td></td><td></td><td></td><td class="s">Please note that this is different from undefining the variable, even though the magic is called when the clearing is a result of the undefine (e.g. for an array, but actually a bug prevent it to work before perl 5.9.5 - see the L<history|/PERL MAGIC HISTORY>).</td></tr>
+<tr><td class="h"><a name="134"></a>134</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="135"></a>135</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="136"></a>136</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="137"></a>137</td><td></td><td></td><td></td><td></td><td class="s">C<free></td></tr>
+<tr><td class="h"><a name="138"></a>138</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="139"></a>139</td><td></td><td></td><td></td><td></td><td class="s">This one can be considered as an object destructor.</td></tr>
+<tr><td class="h"><a name="140"></a>140</td><td></td><td></td><td></td><td></td><td class="s">It happens when the variable goes out of scope, but not when it is undefined.</td></tr>
+<tr><td class="h"><a name="141"></a>141</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="142"></a>142</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="143"></a>143</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="144"></a>144</td><td></td><td></td><td></td><td></td><td class="s">C<copy></td></tr>
+<tr><td class="h"><a name="145"></a>145</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="146"></a>146</td><td></td><td></td><td></td><td></td><td class="s">This magic only applies to tied arrays and hashes.</td></tr>
+<tr><td class="h"><a name="147"></a>147</td><td></td><td></td><td></td><td></td><td class="s">It fires when you try to access or change their elements.</td></tr>
+<tr><td class="h"><a name="148"></a>148</td><td></td><td></td><td></td><td></td><td class="s">It is available on your perl iff C<MGf_COPY> is true.</td></tr>
+<tr><td class="h"><a name="149"></a>149</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="150"></a>150</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="151"></a>151</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="152"></a>152</td><td></td><td></td><td></td><td></td><td class="s">C<dup></td></tr>
+<tr><td class="h"><a name="153"></a>153</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="154"></a>154</td><td></td><td></td><td></td><td></td><td class="s">Invoked when the variable is cloned across threads.</td></tr>
+<tr><td class="h"><a name="155"></a>155</td><td></td><td></td><td></td><td></td><td class="s">Currently not available.</td></tr>
+<tr><td class="h"><a name="156"></a>156</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="157"></a>157</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="158"></a>158</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="159"></a>159</td><td></td><td></td><td></td><td></td><td class="s">C<local></td></tr>
+<tr><td class="h"><a name="160"></a>160</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="161"></a>161</td><td></td><td></td><td></td><td></td><td class="s">When this magic is set on a variable, all subsequent localizations of the variable will trigger the callback.</td></tr>
+<tr><td class="h"><a name="162"></a>162</td><td></td><td></td><td></td><td></td><td class="s">It is available on your perl iff C<MGf_LOCAL> is true.</td></tr>
+<tr><td class="h"><a name="163"></a>163</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="164"></a>164</td><td></td><td></td><td></td><td></td><td class="s">=back</td></tr>
+<tr><td class="h"><a name="165"></a>165</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="166"></a>166</td><td></td><td></td><td></td><td></td><td class="s">The following actions only apply to hashes and are available iff L</VMG_UVAR> is true.</td></tr>
+<tr><td class="h"><a name="167"></a>167</td><td></td><td></td><td></td><td></td><td class="s">They are referred to as C<uvar> magics.</td></tr>
+<tr><td class="h"><a name="168"></a>168</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="169"></a>169</td><td></td><td></td><td></td><td></td><td class="s">=over 4</td></tr>
+<tr><td class="h"><a name="170"></a>170</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="171"></a>171</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="172"></a>172</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="173"></a>173</td><td></td><td></td><td></td><td></td><td class="s">C<fetch></td></tr>
+<tr><td class="h"><a name="174"></a>174</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="175"></a>175</td><td></td><td></td><td></td><td></td><td class="s">This magic happens each time an element is fetched from the hash.</td></tr>
+<tr><td class="h"><a name="176"></a>176</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="177"></a>177</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="178"></a>178</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="179"></a>179</td><td></td><td></td><td></td><td></td><td class="s">C<store></td></tr>
+<tr><td class="h"><a name="180"></a>180</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="181"></a>181</td><td></td><td></td><td></td><td></td><td class="s">This one is called when an element is stored into the hash.</td></tr>
+<tr><td class="h"><a name="182"></a>182</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="183"></a>183</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="184"></a>184</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="185"></a>185</td><td></td><td></td><td></td><td></td><td class="s">C<exists></td></tr>
+<tr><td class="h"><a name="186"></a>186</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="187"></a>187</td><td></td><td></td><td></td><td></td><td class="s">This magic fires when a key is tested for existence in the hash.</td></tr>
+<tr><td class="h"><a name="188"></a>188</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="189"></a>189</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="190"></a>190</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="191"></a>191</td><td></td><td></td><td></td><td></td><td class="s">C<delete></td></tr>
+<tr><td class="h"><a name="192"></a>192</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="193"></a>193</td><td></td><td></td><td></td><td></td><td class="s">This last one triggers when a key is deleted in the hash, regardless of whether the key actually exists in it.</td></tr>
+<tr><td class="h"><a name="194"></a>194</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="195"></a>195</td><td></td><td></td><td></td><td></td><td class="s">=back</td></tr>
+<tr><td class="h"><a name="196"></a>196</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="197"></a>197</td><td></td><td></td><td></td><td></td><td class="s">You can refer to the tests to have more insight of where the different magics are invoked.</td></tr>
+<tr><td class="h"><a name="198"></a>198</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="199"></a>199</td><td></td><td></td><td></td><td></td><td class="s">=head1 FUNCTIONS</td></tr>
+<tr><td class="h"><a name="200"></a>200</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="201"></a>201</td><td></td><td></td><td></td><td></td><td class="s">=cut</td></tr>
+<tr><td class="h"><a name="202"></a>202</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="203"></a>203</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 344µs (10+334) within Variable::Magic::BEGIN@203 which was called:
+# once (10µs+334µs) by B::Hooks::EndOfScope::BEGIN@14 at <a href="Variable-Magic-pm-377-block.html#206">line 206</a></div></div>BEGIN {</td></tr>
+<tr><td class="h"><a name="204"></a>204</td><td class="c1">2</td><td class="c0"><span title="Avg 172µs">344µs</span></td><td></td><td></td><td class="s"> require XSLoader;</td></tr>
+<tr><td class="h"><a name="205"></a>205</td><td></td><td></td><td class="c3">1</td><td class="c0">334µs</td><td class="s"> XSLoader::load(__PACKAGE__, $VERSION);<div class="calls"><div class="calls_out"> # spent 334µs making 1 call to <a href="XSLoader-pm-681-block.html#20">XSLoader::load</a></div></div></td></tr>
+<tr><td class="h"><a name="206"></a>206</td><td class="c3">1</td><td class="c0"><span title="Avg 366µs">366µs</span></td><td class="c3">1</td><td class="c0">344µs</td><td class="s">}<div class="calls"><div class="calls_out"># spent 344µs making 1 call to <a href="Variable-Magic-pm-377-block.html#203">Variable::Magic::BEGIN@203</a></div></div></td></tr>
+<tr><td class="h"><a name="207"></a>207</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="208"></a>208</td><td></td><td></td><td></td><td></td><td class="s">=head2 C<wizard></td></tr>
+<tr><td class="h"><a name="209"></a>209</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="210"></a>210</td><td></td><td></td><td></td><td></td><td class="s"> wizard(</td></tr>
+<tr><td class="h"><a name="211"></a>211</td><td></td><td></td><td></td><td></td><td class="s"> data => sub { ... },</td></tr>
+<tr><td class="h"><a name="212"></a>212</td><td></td><td></td><td></td><td></td><td class="s"> get => sub { my ($ref, $data [, $op]) = @_; ... },</td></tr>
+<tr><td class="h"><a name="213"></a>213</td><td></td><td></td><td></td><td></td><td class="s"> set => sub { my ($ref, $data [, $op]) = @_; ... },</td></tr>
+<tr><td class="h"><a name="214"></a>214</td><td></td><td></td><td></td><td></td><td class="s"> len => sub {</td></tr>
+<tr><td class="h"><a name="215"></a>215</td><td></td><td></td><td></td><td></td><td class="s"> my ($ref, $data, $len [, $op]) = @_; ... ; return $newlen</td></tr>
+<tr><td class="h"><a name="216"></a>216</td><td></td><td></td><td></td><td></td><td class="s"> },</td></tr>
+<tr><td class="h"><a name="217"></a>217</td><td></td><td></td><td></td><td></td><td class="s"> clear => sub { my ($ref, $data [, $op]) = @_; ... },</td></tr>
+<tr><td class="h"><a name="218"></a>218</td><td></td><td></td><td></td><td></td><td class="s"> free => sub { my ($ref, $data [, $op]) = @_, ... },</td></tr>
+<tr><td class="h"><a name="219"></a>219</td><td></td><td></td><td></td><td></td><td class="s"> copy => sub { my ($ref, $data, $key, $elt [, $op]) = @_; ... },</td></tr>
+<tr><td class="h"><a name="220"></a>220</td><td></td><td></td><td></td><td></td><td class="s"> local => sub { my ($ref, $data [, $op]) = @_; ... },</td></tr>
+<tr><td class="h"><a name="221"></a>221</td><td></td><td></td><td></td><td></td><td class="s"> fetch => sub { my ($ref, $data, $key [, $op]) = @_; ... },</td></tr>
+<tr><td class="h"><a name="222"></a>222</td><td></td><td></td><td></td><td></td><td class="s"> store => sub { my ($ref, $data, $key [, $op]) = @_; ... },</td></tr>
+<tr><td class="h"><a name="223"></a>223</td><td></td><td></td><td></td><td></td><td class="s"> exists => sub { my ($ref, $data, $key [, $op]) = @_; ... },</td></tr>
+<tr><td class="h"><a name="224"></a>224</td><td></td><td></td><td></td><td></td><td class="s"> delete => sub { my ($ref, $data, $key [, $op]) = @_; ... },</td></tr>
+<tr><td class="h"><a name="225"></a>225</td><td></td><td></td><td></td><td></td><td class="s"> copy_key => $bool,</td></tr>
+<tr><td class="h"><a name="226"></a>226</td><td></td><td></td><td></td><td></td><td class="s"> op_info => [ 0 | VMG_OP_INFO_NAME | VMG_OP_INFO_OBJECT ],</td></tr>
+<tr><td class="h"><a name="227"></a>227</td><td></td><td></td><td></td><td></td><td class="s"> )</td></tr>
+<tr><td class="h"><a name="228"></a>228</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="229"></a>229</td><td></td><td></td><td></td><td></td><td class="s">This function creates a 'wizard', an opaque type that holds the magic information.</td></tr>
+<tr><td class="h"><a name="230"></a>230</td><td></td><td></td><td></td><td></td><td class="s">It takes a list of keys / values as argument, whose keys can be :</td></tr>
+<tr><td class="h"><a name="231"></a>231</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="232"></a>232</td><td></td><td></td><td></td><td></td><td class="s">=over 4</td></tr>
+<tr><td class="h"><a name="233"></a>233</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="234"></a>234</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="235"></a>235</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="236"></a>236</td><td></td><td></td><td></td><td></td><td class="s">C<data></td></tr>
+<tr><td class="h"><a name="237"></a>237</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="238"></a>238</td><td></td><td></td><td></td><td></td><td class="s">A code (or string) reference to a private data constructor.</td></tr>
+<tr><td class="h"><a name="239"></a>239</td><td></td><td></td><td></td><td></td><td class="s">It is called each time this magic is cast on a variable, and the scalar returned is used as private data storage for it.</td></tr>
+<tr><td class="h"><a name="240"></a>240</td><td></td><td></td><td></td><td></td><td class="s">C<$_[0]> is a reference to the magic object and C<@_[1 .. @_-1]> are all extra arguments that were passed to L</cast>.</td></tr>
+<tr><td class="h"><a name="241"></a>241</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="242"></a>242</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="243"></a>243</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="244"></a>244</td><td></td><td></td><td></td><td></td><td class="s">C<get>, C<set>, C<len>, C<clear>, C<free>, C<copy>, C<local>, C<fetch>, C<store>, C<exists> and C<delete></td></tr>
+<tr><td class="h"><a name="245"></a>245</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="246"></a>246</td><td></td><td></td><td></td><td></td><td class="s">Code (or string) references to the corresponding magic callbacks.</td></tr>
+<tr><td class="h"><a name="247"></a>247</td><td></td><td></td><td></td><td></td><td class="s">You don't have to specify all of them : the magic associated with undefined entries simply won't be hooked.</td></tr>
+<tr><td class="h"><a name="248"></a>248</td><td></td><td></td><td></td><td></td><td class="s">In those callbacks, C<$_[0]> is always a reference to the magic object and C<$_[1]> is always the private data (or C<undef> when no private data constructor was supplied).</td></tr>
+<tr><td class="h"><a name="249"></a>249</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="250"></a>250</td><td></td><td></td><td></td><td></td><td class="s">Moreover, when you pass C<< op_info => $num >> to C<wizard>, the last element of C<@_> will be the current op name if C<$num == VMG_OP_INFO_NAME> and a C<B::OP> object representing the current op if C<$num == VMG_OP_INFO_OBJECT>.</td></tr>
+<tr><td class="h"><a name="251"></a>251</td><td></td><td></td><td></td><td></td><td class="s">Both have a performance hit, but just getting the name is lighter than getting the op object.</td></tr>
+<tr><td class="h"><a name="252"></a>252</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="253"></a>253</td><td></td><td></td><td></td><td></td><td class="s">Other arguments are specific to the magic hooked :</td></tr>
+<tr><td class="h"><a name="254"></a>254</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="255"></a>255</td><td></td><td></td><td></td><td></td><td class="s">=over 8</td></tr>
+<tr><td class="h"><a name="256"></a>256</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="257"></a>257</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="258"></a>258</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="259"></a>259</td><td></td><td></td><td></td><td></td><td class="s">C<len></td></tr>
+<tr><td class="h"><a name="260"></a>260</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="261"></a>261</td><td></td><td></td><td></td><td></td><td class="s">When the variable is an array or a scalar, C<$_[2]> contains the non-magical length.</td></tr>
+<tr><td class="h"><a name="262"></a>262</td><td></td><td></td><td></td><td></td><td class="s">The callback can return the new scalar or array length to use, or C<undef> to default to the normal length.</td></tr>
+<tr><td class="h"><a name="263"></a>263</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="264"></a>264</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="265"></a>265</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="266"></a>266</td><td></td><td></td><td></td><td></td><td class="s">C<copy></td></tr>
+<tr><td class="h"><a name="267"></a>267</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="268"></a>268</td><td></td><td></td><td></td><td></td><td class="s">C<$_[2]> is a either a copy or an alias of the current key, which means that it is useless to try to change or cast magic on it.</td></tr>
+<tr><td class="h"><a name="269"></a>269</td><td></td><td></td><td></td><td></td><td class="s">C<$_[3]> is an alias to the current element (i.e. the value).</td></tr>
+<tr><td class="h"><a name="270"></a>270</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="271"></a>271</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="272"></a>272</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="273"></a>273</td><td></td><td></td><td></td><td></td><td class="s">C<fetch>, C<store>, C<exists> and C<delete></td></tr>
+<tr><td class="h"><a name="274"></a>274</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="275"></a>275</td><td></td><td></td><td></td><td></td><td class="s">C<$_[2]> is an alias to the current key.</td></tr>
+<tr><td class="h"><a name="276"></a>276</td><td></td><td></td><td></td><td></td><td class="s">Nothing prevents you from changing it, but be aware that there lurk dangerous side effects.</td></tr>
+<tr><td class="h"><a name="277"></a>277</td><td></td><td></td><td></td><td></td><td class="s">For example, it may rightfully be readonly if the key was a bareword.</td></tr>
+<tr><td class="h"><a name="278"></a>278</td><td></td><td></td><td></td><td></td><td class="s">You can get a copy instead by passing C<< copy_key => 1 >> to L</wizard>, which allows you to safely assign to C<$_[2]> in order to e.g. redirect the action to another key.</td></tr>
+<tr><td class="h"><a name="279"></a>279</td><td></td><td></td><td></td><td></td><td class="s">This however has a little performance drawback because of the copy.</td></tr>
+<tr><td class="h"><a name="280"></a>280</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="281"></a>281</td><td></td><td></td><td></td><td></td><td class="s">=back</td></tr>
+<tr><td class="h"><a name="282"></a>282</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="283"></a>283</td><td></td><td></td><td></td><td></td><td class="s">All the callbacks are expected to return an integer, which is passed straight to the perl magic API.</td></tr>
+<tr><td class="h"><a name="284"></a>284</td><td></td><td></td><td></td><td></td><td class="s">However, only the return value of the C<len> callback currently holds a meaning.</td></tr>
+<tr><td class="h"><a name="285"></a>285</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="286"></a>286</td><td></td><td></td><td></td><td></td><td class="s">=back</td></tr>
+<tr><td class="h"><a name="287"></a>287</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="288"></a>288</td><td></td><td></td><td></td><td></td><td class="s">Each callback can be specified as :</td></tr>
+<tr><td class="h"><a name="289"></a>289</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="290"></a>290</td><td></td><td></td><td></td><td></td><td class="s">=over 4</td></tr>
+<tr><td class="h"><a name="291"></a>291</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="292"></a>292</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="293"></a>293</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="294"></a>294</td><td></td><td></td><td></td><td></td><td class="s">a code reference, which will be called as a subroutine.</td></tr>
+<tr><td class="h"><a name="295"></a>295</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="296"></a>296</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="297"></a>297</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="298"></a>298</td><td></td><td></td><td></td><td></td><td class="s">a string reference, where the string denotes which subroutine is to be called when magic is triggered.</td></tr>
+<tr><td class="h"><a name="299"></a>299</td><td></td><td></td><td></td><td></td><td class="s">If the subroutine name is not fully qualified, then the current package at the time the magic is invoked will be used instead.</td></tr>
+<tr><td class="h"><a name="300"></a>300</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="301"></a>301</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="302"></a>302</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="303"></a>303</td><td></td><td></td><td></td><td></td><td class="s">a reference to C<undef>, in which case a no-op magic callback is installed instead of the default one.</td></tr>
+<tr><td class="h"><a name="304"></a>304</td><td></td><td></td><td></td><td></td><td class="s">This may especially be helpful for 'local' magic, where an empty callback prevents magic from being copied during localization.</td></tr>
+<tr><td class="h"><a name="305"></a>305</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="306"></a>306</td><td></td><td></td><td></td><td></td><td class="s">=back</td></tr>
+<tr><td class="h"><a name="307"></a>307</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="308"></a>308</td><td></td><td></td><td></td><td></td><td class="s">Note that C<free> callbacks are I<never> called during global destruction, as there's no way to ensure that the wizard and the C<free> callback weren't destroyed before the variable.</td></tr>
+<tr><td class="h"><a name="309"></a>309</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="310"></a>310</td><td></td><td></td><td></td><td></td><td class="s">Here's a simple usage example :</td></tr>
+<tr><td class="h"><a name="311"></a>311</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="312"></a>312</td><td></td><td></td><td></td><td></td><td class="s"> # A simple scalar tracer</td></tr>
+<tr><td class="h"><a name="313"></a>313</td><td></td><td></td><td></td><td></td><td class="s"> my $wiz = wizard(</td></tr>
+<tr><td class="h"><a name="314"></a>314</td><td></td><td></td><td></td><td></td><td class="s"> get => sub { print STDERR "got ${$_[0]}\n" },</td></tr>
+<tr><td class="h"><a name="315"></a>315</td><td></td><td></td><td></td><td></td><td class="s"> set => sub { print STDERR "set to ${$_[0]}\n" },</td></tr>
+<tr><td class="h"><a name="316"></a>316</td><td></td><td></td><td></td><td></td><td class="s"> free => sub { print STDERR "${$_[0]} was deleted\n" },</td></tr>
+<tr><td class="h"><a name="317"></a>317</td><td></td><td></td><td></td><td></td><td class="s"> );</td></tr>
+<tr><td class="h"><a name="318"></a>318</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="319"></a>319</td><td></td><td></td><td></td><td></td><td class="s">=cut</td></tr>
+<tr><td class="h"><a name="320"></a>320</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="321"></a>321</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 71µs (33+39) within Variable::Magic::wizard which was called:
+# once (33µs+39µs) by namespace::autoclean::BEGIN@14 at <a href="B-Hooks-EndOfScope-pm-376-block.html#33">line 33 of B/Hooks/EndOfScope.pm</a></div></div>sub wizard {</td></tr>
+<tr><td class="h"><a name="322"></a>322</td><td class="c0">9</td><td class="c3"><span title="Avg 2µs">17µs</span></td><td></td><td></td><td class="s"> if (@_ % 2) {</td></tr>
+<tr><td class="h"><a name="323"></a>323</td><td></td><td></td><td></td><td></td><td class="s"> require Carp;</td></tr>
+<tr><td class="h"><a name="324"></a>324</td><td></td><td></td><td></td><td></td><td class="s"> Carp::croak('Wrong number of arguments for wizard()');</td></tr>
+<tr><td class="h"><a name="325"></a>325</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
+<tr><td class="h"><a name="326"></a>326</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="327"></a>327</td><td></td><td></td><td></td><td></td><td class="s"> my %opts = @_;</td></tr>
+<tr><td class="h"><a name="328"></a>328</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="329"></a>329</td><td></td><td></td><td></td><td></td><td class="s"> my @keys = qw<op_info data get set len clear free copy dup>;</td></tr>
+<tr><td class="h"><a name="330"></a>330</td><td></td><td></td><td></td><td></td><td class="s"> push @keys, 'local' if MGf_LOCAL;</td></tr>
+<tr><td class="h"><a name="331"></a>331</td><td></td><td></td><td></td><td></td><td class="s"> push @keys, qw<fetch store exists delete copy_key> if VMG_UVAR;</td></tr>
+<tr><td class="h"><a name="332"></a>332</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="333"></a>333</td><td></td><td></td><td></td><td></td><td class="s"> my ($wiz, $err);</td></tr>
+<tr><td class="h"><a name="334"></a>334</td><td></td><td></td><td></td><td></td><td class="s"> {</td></tr>
+<tr><td class="h"><a name="335"></a>335</td><td class="c0">3</td><td class="c3"><span title="Avg 933ns">3µs</span></td><td></td><td></td><td class="s"> local $@;</td></tr>
+<tr><td class="h"><a name="336"></a>336</td><td class="c3">1</td><td class="c0"><span title="Avg 51µs">51µs</span></td><td class="c3">1</td><td class="c3">39µs</td><td class="s"> $wiz = eval { _wizard(map $opts{$_}, @keys) };<div class="calls"><div class="calls_out"> # spent 39µs making 1 call to <a href="Variable-Magic-pm-377-block.html#Variable__Magic___wizard">Variable::Magic::_wizard</a></div></div></td></tr>
+<tr><td class="h"><a name="337"></a>337</td><td></td><td></td><td></td><td></td><td class="s"> $err = $@;</td></tr>
+<tr><td class="h"><a name="338"></a>338</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
+<tr><td class="h"><a name="339"></a>339</td><td></td><td></td><td></td><td></td><td class="s"> if ($err) {</td></tr>
+<tr><td class="h"><a name="340"></a>340</td><td></td><td></td><td></td><td></td><td class="s"> $err =~ s/\sat\s+.*?\n//;</td></tr>
+<tr><td class="h"><a name="341"></a>341</td><td></td><td></td><td></td><td></td><td class="s"> require Carp;</td></tr>
+<tr><td class="h"><a name="342"></a>342</td><td></td><td></td><td></td><td></td><td class="s"> Carp::croak($err);</td></tr>
+<tr><td class="h"><a name="343"></a>343</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
+<tr><td class="h"><a name="344"></a>344</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="345"></a>345</td><td></td><td></td><td></td><td></td><td class="s"> return $wiz;</td></tr>
+<tr><td class="h"><a name="346"></a>346</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
+<tr><td class="h"><a name="347"></a>347</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="348"></a>348</td><td></td><td></td><td></td><td></td><td class="s">=head2 C<cast></td></tr>
+<tr><td class="h"><a name="349"></a>349</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="350"></a>350</td><td></td><td></td><td></td><td></td><td class="s"> cast [$@%&*]var, $wiz, ...</td></tr>
+<tr><td class="h"><a name="351"></a>351</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="352"></a>352</td><td></td><td></td><td></td><td></td><td class="s">This function associates C<$wiz> magic to the variable supplied, without overwriting any other kind of magic.</td></tr>
+<tr><td class="h"><a name="353"></a>353</td><td></td><td></td><td></td><td></td><td class="s">It returns true on success or when C<$wiz> magic is already present, and croaks on error.</td></tr>
+<tr><td class="h"><a name="354"></a>354</td><td></td><td></td><td></td><td></td><td class="s">All extra arguments specified after C<$wiz> are passed to the private data constructor in C<@_[1 .. @_-1]>.</td></tr>
+<tr><td class="h"><a name="355"></a>355</td><td></td><td></td><td></td><td></td><td class="s">If the variable isn't a hash, any C<uvar> callback of the wizard is safely ignored.</td></tr>
+<tr><td class="h"><a name="356"></a>356</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="357"></a>357</td><td></td><td></td><td></td><td></td><td class="s"> # Casts $wiz onto $x, and pass '1' to the data constructor.</td></tr>
+<tr><td class="h"><a name="358"></a>358</td><td></td><td></td><td></td><td></td><td class="s"> my $x;</td></tr>
+<tr><td class="h"><a name="359"></a>359</td><td></td><td></td><td></td><td></td><td class="s"> cast $x, $wiz, 1;</td></tr>
+<tr><td class="h"><a name="360"></a>360</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="361"></a>361</td><td></td><td></td><td></td><td></td><td class="s">The C<var> argument can be an array or hash value.</td></tr>
+<tr><td class="h"><a name="362"></a>362</td><td></td><td></td><td></td><td></td><td class="s">Magic for those behaves like for any other scalar, except that it is dispelled when the entry is deleted from the container.</td></tr>
+<tr><td class="h"><a name="363"></a>363</td><td></td><td></td><td></td><td></td><td class="s">For example, if you want to call C<POSIX::tzset> each time the C<'TZ'> environment variable is changed in C<%ENV>, you can use :</td></tr>
+<tr><td class="h"><a name="364"></a>364</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="365"></a>365</td><td></td><td></td><td></td><td></td><td class="s"> use POSIX;</td></tr>
+<tr><td class="h"><a name="366"></a>366</td><td></td><td></td><td></td><td></td><td class="s"> cast $ENV{TZ}, wizard set => sub { POSIX::tzset(); () };</td></tr>
+<tr><td class="h"><a name="367"></a>367</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="368"></a>368</td><td></td><td></td><td></td><td></td><td class="s">If you want to overcome the possible deletion of the C<'TZ'> entry, you have no choice but to rely on C<store> uvar magic.</td></tr>
+<tr><td class="h"><a name="369"></a>369</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="370"></a>370</td><td></td><td></td><td></td><td></td><td class="s">=head2 C<getdata></td></tr>
+<tr><td class="h"><a name="371"></a>371</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="372"></a>372</td><td></td><td></td><td></td><td></td><td class="s"> getdata [$@%&*]var, $wiz</td></tr>
+<tr><td class="h"><a name="373"></a>373</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="374"></a>374</td><td></td><td></td><td></td><td></td><td class="s">This accessor fetches the private data associated with the magic C<$wiz> in the variable.</td></tr>
+<tr><td class="h"><a name="375"></a>375</td><td></td><td></td><td></td><td></td><td class="s">It croaks when C<$wiz> do not represent a valid magic object, and returns an empty list if no such magic is attached to the variable or when the wizard has no data constructor.</td></tr>
+<tr><td class="h"><a name="376"></a>376</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="377"></a>377</td><td></td><td></td><td></td><td></td><td class="s"> # Get the attached data, or undef if the wizard does not attach any.</td></tr>
+<tr><td class="h"><a name="378"></a>378</td><td></td><td></td><td></td><td></td><td class="s"> my $data = getdata $x, $wiz;</td></tr>
+<tr><td class="h"><a name="379"></a>379</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="380"></a>380</td><td></td><td></td><td></td><td></td><td class="s">=head2 C<dispell></td></tr>
+<tr><td class="h"><a name="381"></a>381</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="382"></a>382</td><td></td><td></td><td></td><td></td><td class="s"> dispell [$@%&*]variable, $wiz</td></tr>
+<tr><td class="h"><a name="383"></a>383</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="384"></a>384</td><td></td><td></td><td></td><td></td><td class="s">The exact opposite of L</cast> : it dissociates C<$wiz> magic from the variable.</td></tr>
+<tr><td class="h"><a name="385"></a>385</td><td></td><td></td><td></td><td></td><td class="s">This function returns true on success, C<0> when no magic represented by C<$wiz> could be found in the variable, and croaks if the supplied wizard is invalid.</td></tr>
+<tr><td class="h"><a name="386"></a>386</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="387"></a>387</td><td></td><td></td><td></td><td></td><td class="s"> # Dispell now.</td></tr>
+<tr><td class="h"><a name="388"></a>388</td><td></td><td></td><td></td><td></td><td class="s"> die 'no such magic in $x' unless dispell $x, $wiz;</td></tr>
+<tr><td class="h"><a name="389"></a>389</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="390"></a>390</td><td></td><td></td><td></td><td></td><td class="s">=head1 CONSTANTS</td></tr>
+<tr><td class="h"><a name="391"></a>391</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="392"></a>392</td><td></td><td></td><td></td><td></td><td class="s">=head2 C<MGf_COPY></td></tr>
+<tr><td class="h"><a name="393"></a>393</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="394"></a>394</td><td></td><td></td><td></td><td></td><td class="s">Evaluates to true iff the 'copy' magic is available.</td></tr>
+<tr><td class="h"><a name="395"></a>395</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="396"></a>396</td><td></td><td></td><td></td><td></td><td class="s">=head2 C<MGf_DUP></td></tr>
+<tr><td class="h"><a name="397"></a>397</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="398"></a>398</td><td></td><td></td><td></td><td></td><td class="s">Evaluates to true iff the 'dup' magic is available.</td></tr>
+<tr><td class="h"><a name="399"></a>399</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="400"></a>400</td><td></td><td></td><td></td><td></td><td class="s">=head2 C<MGf_LOCAL></td></tr>
+<tr><td class="h"><a name="401"></a>401</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="402"></a>402</td><td></td><td></td><td></td><td></td><td class="s">Evaluates to true iff the 'local' magic is available.</td></tr>
+<tr><td class="h"><a name="403"></a>403</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="404"></a>404</td><td></td><td></td><td></td><td></td><td class="s">=head2 C<VMG_UVAR></td></tr>
+<tr><td class="h"><a name="405"></a>405</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="406"></a>406</td><td></td><td></td><td></td><td></td><td class="s">When this constant is true, you can use the C<fetch,store,exists,delete> callbacks on hashes.</td></tr>
+<tr><td class="h"><a name="407"></a>407</td><td></td><td></td><td></td><td></td><td class="s">Initial VMG_UVAR capability was introduced in perl 5.9.5, with a fully functional implementation</td></tr>
+<tr><td class="h"><a name="408"></a>408</td><td></td><td></td><td></td><td></td><td class="s">shipped with perl 5.10.0.</td></tr>
+<tr><td class="h"><a name="409"></a>409</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="410"></a>410</td><td></td><td></td><td></td><td></td><td class="s">=head2 C<VMG_COMPAT_SCALAR_LENGTH_NOLEN></td></tr>
+<tr><td class="h"><a name="411"></a>411</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="412"></a>412</td><td></td><td></td><td></td><td></td><td class="s">True for perls that don't call 'len' magic when taking the C<length> of a magical scalar.</td></tr>
+<tr><td class="h"><a name="413"></a>413</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="414"></a>414</td><td></td><td></td><td></td><td></td><td class="s">=head2 C<VMG_COMPAT_ARRAY_PUSH_NOLEN></td></tr>
+<tr><td class="h"><a name="415"></a>415</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="416"></a>416</td><td></td><td></td><td></td><td></td><td class="s">True for perls that don't call 'len' magic when you push an element in a magical array.</td></tr>
+<tr><td class="h"><a name="417"></a>417</td><td></td><td></td><td></td><td></td><td class="s">Starting from perl 5.11.0, this only refers to pushes in non-void context and hence is false.</td></tr>
+<tr><td class="h"><a name="418"></a>418</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="419"></a>419</td><td></td><td></td><td></td><td></td><td class="s">=head2 C<VMG_COMPAT_ARRAY_PUSH_NOLEN_VOID></td></tr>
+<tr><td class="h"><a name="420"></a>420</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="421"></a>421</td><td></td><td></td><td></td><td></td><td class="s">True for perls that don't call 'len' magic when you push in void context an element in a magical array.</td></tr>
+<tr><td class="h"><a name="422"></a>422</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="423"></a>423</td><td></td><td></td><td></td><td></td><td class="s">=head2 C<VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID></td></tr>
+<tr><td class="h"><a name="424"></a>424</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="425"></a>425</td><td></td><td></td><td></td><td></td><td class="s">True for perls that don't call 'len' magic when you unshift in void context an element in a magical array.</td></tr>
+<tr><td class="h"><a name="426"></a>426</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="427"></a>427</td><td></td><td></td><td></td><td></td><td class="s">=head2 C<VMG_COMPAT_ARRAY_UNDEF_CLEAR></td></tr>
+<tr><td class="h"><a name="428"></a>428</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="429"></a>429</td><td></td><td></td><td></td><td></td><td class="s">True for perls that call 'clear' magic when undefining magical arrays.</td></tr>
+<tr><td class="h"><a name="430"></a>430</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="431"></a>431</td><td></td><td></td><td></td><td></td><td class="s">=head2 C<VMG_COMPAT_HASH_DELETE_NOUVAR_VOID></td></tr>
+<tr><td class="h"><a name="432"></a>432</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="433"></a>433</td><td></td><td></td><td></td><td></td><td class="s">True for perls that don't call 'delete' uvar magic when you delete an element from a hash in void context.</td></tr>
+<tr><td class="h"><a name="434"></a>434</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="435"></a>435</td><td></td><td></td><td></td><td></td><td class="s">=head2 C<VMG_COMPAT_GLOB_GET></td></tr>
+<tr><td class="h"><a name="436"></a>436</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="437"></a>437</td><td></td><td></td><td></td><td></td><td class="s">True for perls that call 'get' magic for operations on globs.</td></tr>
+<tr><td class="h"><a name="438"></a>438</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="439"></a>439</td><td></td><td></td><td></td><td></td><td class="s">=head2 C<VMG_PERL_PATCHLEVEL></td></tr>
+<tr><td class="h"><a name="440"></a>440</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="441"></a>441</td><td></td><td></td><td></td><td></td><td class="s">The perl patchlevel this module was built with, or C<0> for non-debugging perls.</td></tr>
+<tr><td class="h"><a name="442"></a>442</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="443"></a>443</td><td></td><td></td><td></td><td></td><td class="s">=head2 C<VMG_THREADSAFE></td></tr>
+<tr><td class="h"><a name="444"></a>444</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="445"></a>445</td><td></td><td></td><td></td><td></td><td class="s">True iff this module could have been built with thread-safety features enabled.</td></tr>
+<tr><td class="h"><a name="446"></a>446</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="447"></a>447</td><td></td><td></td><td></td><td></td><td class="s">=head2 C<VMG_FORKSAFE></td></tr>
+<tr><td class="h"><a name="448"></a>448</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="449"></a>449</td><td></td><td></td><td></td><td></td><td class="s">True iff this module could have been built with fork-safety features enabled.</td></tr>
+<tr><td class="h"><a name="450"></a>450</td><td></td><td></td><td></td><td></td><td class="s">This will always be true except on Windows where it's false for perl 5.10.0 and below .</td></tr>
+<tr><td class="h"><a name="451"></a>451</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="452"></a>452</td><td></td><td></td><td></td><td></td><td class="s">=head2 C<VMG_OP_INFO_NAME></td></tr>
+<tr><td class="h"><a name="453"></a>453</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="454"></a>454</td><td></td><td></td><td></td><td></td><td class="s">Value to pass with C<op_info> to get the current op name in the magic callbacks.</td></tr>
+<tr><td class="h"><a name="455"></a>455</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="456"></a>456</td><td></td><td></td><td></td><td></td><td class="s">=head2 C<VMG_OP_INFO_OBJECT></td></tr>
+<tr><td class="h"><a name="457"></a>457</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="458"></a>458</td><td></td><td></td><td></td><td></td><td class="s">Value to pass with C<op_info> to get a C<B::OP> object representing the current op in the magic callbacks.</td></tr>
+<tr><td class="h"><a name="459"></a>459</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="460"></a>460</td><td></td><td></td><td></td><td></td><td class="s">=head1 COOKBOOK</td></tr>
+<tr><td class="h"><a name="461"></a>461</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="462"></a>462</td><td></td><td></td><td></td><td></td><td class="s">=head2 Associate an object to any perl variable</td></tr>
+<tr><td class="h"><a name="463"></a>463</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="464"></a>464</td><td></td><td></td><td></td><td></td><td class="s">This technique can be useful for passing user data through limited APIs.</td></tr>
+<tr><td class="h"><a name="465"></a>465</td><td></td><td></td><td></td><td></td><td class="s">It is similar to using inside-out objects, but without the drawback of having to implement a complex destructor.</td></tr>
+<tr><td class="h"><a name="466"></a>466</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="467"></a>467</td><td></td><td></td><td></td><td></td><td class="s"> {</td></tr>
+<tr><td class="h"><a name="468"></a>468</td><td></td><td></td><td></td><td></td><td class="s"> package Magical::UserData;</td></tr>
+<tr><td class="h"><a name="469"></a>469</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="470"></a>470</td><td></td><td></td><td></td><td></td><td class="s"> use Variable::Magic qw<wizard cast getdata>;</td></tr>
+<tr><td class="h"><a name="471"></a>471</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="472"></a>472</td><td></td><td></td><td></td><td></td><td class="s"> my $wiz = wizard data => sub { \$_[1] };</td></tr>
+<tr><td class="h"><a name="473"></a>473</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="474"></a>474</td><td></td><td></td><td></td><td></td><td class="s"> sub ud (\[$@%*&]) : lvalue {</td></tr>
+<tr><td class="h"><a name="475"></a>475</td><td></td><td></td><td></td><td></td><td class="s"> my ($var) = @_;</td></tr>
+<tr><td class="h"><a name="476"></a>476</td><td></td><td></td><td></td><td></td><td class="s"> my $data = &getdata($var, $wiz);</td></tr>
+<tr><td class="h"><a name="477"></a>477</td><td></td><td></td><td></td><td></td><td class="s"> unless (defined $data) {</td></tr>
+<tr><td class="h"><a name="478"></a>478</td><td></td><td></td><td></td><td></td><td class="s"> $data = \(my $slot);</td></tr>
+<tr><td class="h"><a name="479"></a>479</td><td></td><td></td><td></td><td></td><td class="s"> &cast($var, $wiz, $slot)</td></tr>
+<tr><td class="h"><a name="480"></a>480</td><td></td><td></td><td></td><td></td><td class="s"> or die "Couldn't cast UserData magic onto the variable";</td></tr>
+<tr><td class="h"><a name="481"></a>481</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
+<tr><td class="h"><a name="482"></a>482</td><td></td><td></td><td></td><td></td><td class="s"> $$data;</td></tr>
+<tr><td class="h"><a name="483"></a>483</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
+<tr><td class="h"><a name="484"></a>484</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
+<tr><td class="h"><a name="485"></a>485</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="486"></a>486</td><td></td><td></td><td></td><td></td><td class="s"> {</td></tr>
+<tr><td class="h"><a name="487"></a>487</td><td></td><td></td><td></td><td></td><td class="s"> BEGIN { *ud = \&Magical::UserData::ud }</td></tr>
+<tr><td class="h"><a name="488"></a>488</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="489"></a>489</td><td></td><td></td><td></td><td></td><td class="s"> my $cb;</td></tr>
+<tr><td class="h"><a name="490"></a>490</td><td></td><td></td><td></td><td></td><td class="s"> $cb = sub { print 'Hello, ', ud(&$cb), "!\n" };</td></tr>
+<tr><td class="h"><a name="491"></a>491</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="492"></a>492</td><td></td><td></td><td></td><td></td><td class="s"> ud(&$cb) = 'world';</td></tr>
+<tr><td class="h"><a name="493"></a>493</td><td></td><td></td><td></td><td></td><td class="s"> $cb->(); # Hello, world!</td></tr>
+<tr><td class="h"><a name="494"></a>494</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
+<tr><td class="h"><a name="495"></a>495</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="496"></a>496</td><td></td><td></td><td></td><td></td><td class="s">=head2 Recursively cast magic on datastructures</td></tr>
+<tr><td class="h"><a name="497"></a>497</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="498"></a>498</td><td></td><td></td><td></td><td></td><td class="s">C<cast> can be called from any magical callback, and in particular from C<data>.</td></tr>
+<tr><td class="h"><a name="499"></a>499</td><td></td><td></td><td></td><td></td><td class="s">This allows you to recursively cast magic on datastructures :</td></tr>
+<tr><td class="h"><a name="500"></a>500</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="501"></a>501</td><td></td><td></td><td></td><td></td><td class="s"> my $wiz;</td></tr>
+<tr><td class="h"><a name="502"></a>502</td><td></td><td></td><td></td><td></td><td class="s"> $wiz = wizard data => sub {</td></tr>
+<tr><td class="h"><a name="503"></a>503</td><td></td><td></td><td></td><td></td><td class="s"> my ($var, $depth) = @_;</td></tr>
+<tr><td class="h"><a name="504"></a>504</td><td></td><td></td><td></td><td></td><td class="s"> $depth ||= 0;</td></tr>
+<tr><td class="h"><a name="505"></a>505</td><td></td><td></td><td></td><td></td><td class="s"> my $r = ref $var;</td></tr>
+<tr><td class="h"><a name="506"></a>506</td><td></td><td></td><td></td><td></td><td class="s"> if ($r eq 'ARRAY') {</td></tr>
+<tr><td class="h"><a name="507"></a>507</td><td></td><td></td><td></td><td></td><td class="s"> &cast((ref() ? $_ : \$_), $wiz, $depth + 1) for @$var;</td></tr>
+<tr><td class="h"><a name="508"></a>508</td><td></td><td></td><td></td><td></td><td class="s"> } elsif ($r eq 'HASH') {</td></tr>
+<tr><td class="h"><a name="509"></a>509</td><td></td><td></td><td></td><td></td><td class="s"> &cast((ref() ? $_ : \$_), $wiz, $depth + 1) for values %$var;</td></tr>
+<tr><td class="h"><a name="510"></a>510</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
+<tr><td class="h"><a name="511"></a>511</td><td></td><td></td><td></td><td></td><td class="s"> return $depth;</td></tr>
+<tr><td class="h"><a name="512"></a>512</td><td></td><td></td><td></td><td></td><td class="s"> },</td></tr>
+<tr><td class="h"><a name="513"></a>513</td><td></td><td></td><td></td><td></td><td class="s"> free => sub {</td></tr>
+<tr><td class="h"><a name="514"></a>514</td><td></td><td></td><td></td><td></td><td class="s"> my ($var, $depth) = @_;</td></tr>
+<tr><td class="h"><a name="515"></a>515</td><td></td><td></td><td></td><td></td><td class="s"> my $r = ref $var;</td></tr>
+<tr><td class="h"><a name="516"></a>516</td><td></td><td></td><td></td><td></td><td class="s"> print "free $r at depth $depth\n";</td></tr>
+<tr><td class="h"><a name="517"></a>517</td><td></td><td></td><td></td><td></td><td class="s"> ();</td></tr>
+<tr><td class="h"><a name="518"></a>518</td><td></td><td></td><td></td><td></td><td class="s"> };</td></tr>
+<tr><td class="h"><a name="519"></a>519</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="520"></a>520</td><td></td><td></td><td></td><td></td><td class="s"> {</td></tr>
+<tr><td class="h"><a name="521"></a>521</td><td></td><td></td><td></td><td></td><td class="s"> my %h = (</td></tr>
+<tr><td class="h"><a name="522"></a>522</td><td></td><td></td><td></td><td></td><td class="s"> a => [ 1, 2 ],</td></tr>
+<tr><td class="h"><a name="523"></a>523</td><td></td><td></td><td></td><td></td><td class="s"> b => { c => 3 }</td></tr>
+<tr><td class="h"><a name="524"></a>524</td><td></td><td></td><td></td><td></td><td class="s"> );</td></tr>
+<tr><td class="h"><a name="525"></a>525</td><td></td><td></td><td></td><td></td><td class="s"> cast %h, $wiz;</td></tr>
+<tr><td class="h"><a name="526"></a>526</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
+<tr><td class="h"><a name="527"></a>527</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="528"></a>528</td><td></td><td></td><td></td><td></td><td class="s">When C<%h> goes out of scope, this will print something among the lines of :</td></tr>
+<tr><td class="h"><a name="529"></a>529</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="530"></a>530</td><td></td><td></td><td></td><td></td><td class="s"> free HASH at depth 0</td></tr>
+<tr><td class="h"><a name="531"></a>531</td><td></td><td></td><td></td><td></td><td class="s"> free HASH at depth 1</td></tr>
+<tr><td class="h"><a name="532"></a>532</td><td></td><td></td><td></td><td></td><td class="s"> free SCALAR at depth 2</td></tr>
+<tr><td class="h"><a name="533"></a>533</td><td></td><td></td><td></td><td></td><td class="s"> free ARRAY at depth 1</td></tr>
+<tr><td class="h"><a name="534"></a>534</td><td></td><td></td><td></td><td></td><td class="s"> free SCALAR at depth 3</td></tr>
+<tr><td class="h"><a name="535"></a>535</td><td></td><td></td><td></td><td></td><td class="s"> free SCALAR at depth 3</td></tr>
+<tr><td class="h"><a name="536"></a>536</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="537"></a>537</td><td></td><td></td><td></td><td></td><td class="s">Of course, this example does nothing with the values that are added after the C<cast>.</td></tr>
+<tr><td class="h"><a name="538"></a>538</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="539"></a>539</td><td></td><td></td><td></td><td></td><td class="s">=head1 PERL MAGIC HISTORY</td></tr>
+<tr><td class="h"><a name="540"></a>540</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="541"></a>541</td><td></td><td></td><td></td><td></td><td class="s">The places where magic is invoked have changed a bit through perl history.</td></tr>
+<tr><td class="h"><a name="542"></a>542</td><td></td><td></td><td></td><td></td><td class="s">Here's a little list of the most recent ones.</td></tr>
+<tr><td class="h"><a name="543"></a>543</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="544"></a>544</td><td></td><td></td><td></td><td></td><td class="s">=over 4</td></tr>
+<tr><td class="h"><a name="545"></a>545</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="546"></a>546</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="547"></a>547</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="548"></a>548</td><td></td><td></td><td></td><td></td><td class="s">B<5.6.x></td></tr>
+<tr><td class="h"><a name="549"></a>549</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="550"></a>550</td><td></td><td></td><td></td><td></td><td class="s">I<p14416> : 'copy' and 'dup' magic.</td></tr>
+<tr><td class="h"><a name="551"></a>551</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="552"></a>552</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="553"></a>553</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="554"></a>554</td><td></td><td></td><td></td><td></td><td class="s">B<5.8.9></td></tr>
+<tr><td class="h"><a name="555"></a>555</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="556"></a>556</td><td></td><td></td><td></td><td></td><td class="s">I<p28160> : Integration of I<p25854> (see below).</td></tr>
+<tr><td class="h"><a name="557"></a>557</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="558"></a>558</td><td></td><td></td><td></td><td></td><td class="s">I<p32542> : Integration of I<p31473> (see below).</td></tr>
+<tr><td class="h"><a name="559"></a>559</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="560"></a>560</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="561"></a>561</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="562"></a>562</td><td></td><td></td><td></td><td></td><td class="s">B<5.9.3></td></tr>
+<tr><td class="h"><a name="563"></a>563</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="564"></a>564</td><td></td><td></td><td></td><td></td><td class="s">I<p25854> : 'len' magic is no longer called when pushing an element into a magic array.</td></tr>
+<tr><td class="h"><a name="565"></a>565</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="566"></a>566</td><td></td><td></td><td></td><td></td><td class="s">I<p26569> : 'local' magic.</td></tr>
+<tr><td class="h"><a name="567"></a>567</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="568"></a>568</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="569"></a>569</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="570"></a>570</td><td></td><td></td><td></td><td></td><td class="s">B<5.9.5></td></tr>
+<tr><td class="h"><a name="571"></a>571</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="572"></a>572</td><td></td><td></td><td></td><td></td><td class="s">I<p31064> : Meaningful 'uvar' magic.</td></tr>
+<tr><td class="h"><a name="573"></a>573</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="574"></a>574</td><td></td><td></td><td></td><td></td><td class="s">I<p31473> : 'clear' magic wasn't invoked when undefining an array.</td></tr>
+<tr><td class="h"><a name="575"></a>575</td><td></td><td></td><td></td><td></td><td class="s">The bug is fixed as of this version.</td></tr>
+<tr><td class="h"><a name="576"></a>576</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="577"></a>577</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="578"></a>578</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="579"></a>579</td><td></td><td></td><td></td><td></td><td class="s">B<5.10.0></td></tr>
+<tr><td class="h"><a name="580"></a>580</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="581"></a>581</td><td></td><td></td><td></td><td></td><td class="s">Since C<PERL_MAGIC_uvar> is uppercased, C<hv_magic_check()> triggers 'copy' magic on hash stores for (non-tied) hashes that also have 'uvar' magic.</td></tr>
+<tr><td class="h"><a name="582"></a>582</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="583"></a>583</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
+<tr><td class="h"><a name="584"></a>584</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="585"></a>585</td><td></td><td></td><td></td><td></td><td class="s">B<5.11.x></td></tr>
+<tr><td class="h"><a name="586"></a>586</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="587"></a>587</td><td></td><td></td><td></td><td></td><td class="s">I<p32969> : 'len' magic is no longer invoked when calling C<length> with a magical scalar.</td></tr>
+<tr><td class="h"><a name="588"></a>588</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="589"></a>589</td><td></td><td></td><td></td><td></td><td class="s">I<p34908> : 'len' magic is no longer called when pushing / unshifting an element into a magical array in void context.</td></tr>
+<tr><td class="h"><a name="590"></a>590</td><td></td><td></td><td></td><td></td><td class="s">The C<push> part was already covered by I<p25854>.</td></tr>
+<tr><td class="h"><a name="591"></a>591</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="592"></a>592</td><td></td><td></td><td></td><td></td><td class="s">I<g9cdcb38b> : 'len' magic is called again when pushing into a magical array in non-void context.</td></tr>
+<tr><td class="h"><a name="593"></a>593</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="594"></a>594</td><td></td><td></td><td></td><td></td><td class="s">=back</td></tr>
+<tr><td class="h"><a name="595"></a>595</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="596"></a>596</td><td></td><td></td><td></td><td></td><td class="s">=head1 EXPORT</td></tr>
+<tr><td class="h"><a name="597"></a>597</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="598"></a>598</td><td></td><td></td><td></td><td></td><td class="s">The functions L</wizard>, L</cast>, L</getdata> and L</dispell> are only exported on request.</td></tr>
+<tr><td class="h"><a name="599"></a>599</td><td></td><td></td><td></td><td></td><td class="s">All of them are exported by the tags C<':funcs'> and C<':all'>.</td></tr>
+<tr><td class="h"><a name="600"></a>600</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="601"></a>601</td><td></td><td></td><td></td><td></td><td class="s">All the constants are also only exported on request, either individually or by the tags C<':consts'> and C<':all'>.</td></tr>
+<tr><td class="h"><a name="602"></a>602</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="603"></a>603</td><td></td><td></td><td></td><td></td><td class="s">=cut</td></tr>
+<tr><td class="h"><a name="604"></a>604</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="605"></a>605</td><td class="c1">2</td><td class="c0"><span title="Avg 77µs">153µs</span></td><td class="c1">2</td><td class="c0">206µs</td><td class="s"><div class="calls"><div class="calls_in"># spent 110µs (14+96) within Variable::Magic::BEGIN@605 which was called:
+# once (14µs+96µs) by B::Hooks::EndOfScope::BEGIN@14 at <a href="Variable-Magic-pm-377-block.html#605">line 605</a></div></div>use base qw<Exporter>;<div class="calls"><div class="calls_out"># spent 110µs making 1 call to <a href="Variable-Magic-pm-377-block.html#605">Variable::Magic::BEGIN@605</a>
+# spent 96µs making 1 call to <a href="base-pm-22-block.html#58">base::import</a></div></div></td></tr>
+<tr><td class="h"><a name="606"></a>606</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="607"></a>607</td><td class="c3">1</td><td class="c3"><span title="Avg 500ns">500ns</span></td><td></td><td></td><td class="s">our @EXPORT = ();</td></tr>
+<tr><td class="h"><a name="608"></a>608</td><td class="c3">1</td><td class="c3"><span title="Avg 7µs">7µs</span></td><td></td><td></td><td class="s">our %EXPORT_TAGS = (</td></tr>
+<tr><td class="h"><a name="609"></a>609</td><td></td><td></td><td></td><td></td><td class="s"> 'funcs' => [ qw<wizard cast getdata dispell> ],</td></tr>
+<tr><td class="h"><a name="610"></a>610</td><td></td><td></td><td></td><td></td><td class="s"> 'consts' => [ qw<</td></tr>
+<tr><td class="h"><a name="611"></a>611</td><td></td><td></td><td></td><td></td><td class="s"> MGf_COPY MGf_DUP MGf_LOCAL VMG_UVAR</td></tr>
+<tr><td class="h"><a name="612"></a>612</td><td></td><td></td><td></td><td></td><td class="s"> VMG_COMPAT_SCALAR_LENGTH_NOLEN</td></tr>
+<tr><td class="h"><a name="613"></a>613</td><td></td><td></td><td></td><td></td><td class="s"> VMG_COMPAT_ARRAY_PUSH_NOLEN VMG_COMPAT_ARRAY_PUSH_NOLEN_VOID</td></tr>
+<tr><td class="h"><a name="614"></a>614</td><td></td><td></td><td></td><td></td><td class="s"> VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID</td></tr>
+<tr><td class="h"><a name="615"></a>615</td><td></td><td></td><td></td><td></td><td class="s"> VMG_COMPAT_ARRAY_UNDEF_CLEAR</td></tr>
+<tr><td class="h"><a name="616"></a>616</td><td></td><td></td><td></td><td></td><td class="s"> VMG_COMPAT_HASH_DELETE_NOUVAR_VOID</td></tr>
+<tr><td class="h"><a name="617"></a>617</td><td></td><td></td><td></td><td></td><td class="s"> VMG_COMPAT_GLOB_GET</td></tr>
+<tr><td class="h"><a name="618"></a>618</td><td></td><td></td><td></td><td></td><td class="s"> VMG_PERL_PATCHLEVEL</td></tr>
+<tr><td class="h"><a name="619"></a>619</td><td></td><td></td><td></td><td></td><td class="s"> VMG_THREADSAFE VMG_FORKSAFE</td></tr>
+<tr><td class="h"><a name="620"></a>620</td><td></td><td></td><td></td><td></td><td class="s"> VMG_OP_INFO_NAME VMG_OP_INFO_OBJECT</td></tr>
+<tr><td class="h"><a name="621"></a>621</td><td></td><td></td><td></td><td></td><td class="s"> > ],</td></tr>
+<tr><td class="h"><a name="622"></a>622</td><td></td><td></td><td></td><td></td><td class="s">);</td></tr>
+<tr><td class="h"><a name="623"></a>623</td><td class="c3">1</td><td class="c3"><span title="Avg 8µs">8µs</span></td><td></td><td></td><td class="s">our @EXPORT_OK = map { @$_ } values %EXPORT_TAGS;</td></tr>
+<tr><td class="h"><a name="624"></a>624</td><td class="c3">1</td><td class="c3"><span title="Avg 4µs">4µs</span></td><td></td><td></td><td class="s">$EXPORT_TAGS{'all'} = [ @EXPORT_OK ];</td></tr>
+<tr><td class="h"><a name="625"></a>625</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="626"></a>626</td><td></td><td></td><td></td><td></td><td class="s">=head1 CAVEATS</td></tr>
+<tr><td class="h"><a name="627"></a>627</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="628"></a>628</td><td></td><td></td><td></td><td></td><td class="s">If you store a magic object in the private data slot, the magic won't be accessible by L</getdata> since it's not copied by assignment.</td></tr>
+<tr><td class="h"><a name="629"></a>629</td><td></td><td></td><td></td><td></td><td class="s">The only way to address this would be to return a reference.</td></tr>
+<tr><td class="h"><a name="630"></a>630</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="631"></a>631</td><td></td><td></td><td></td><td></td><td class="s">If you define a wizard with a C<free> callback and cast it on itself, this destructor won't be called because the wizard will be destroyed first.</td></tr>
+<tr><td class="h"><a name="632"></a>632</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="633"></a>633</td><td></td><td></td><td></td><td></td><td class="s">In order to define magic on hash members, you need at least L<perl> 5.10.0 (see L</VMG_UVAR>)</td></tr>
+<tr><td class="h"><a name="634"></a>634</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="635"></a>635</td><td></td><td></td><td></td><td></td><td class="s">=head1 DEPENDENCIES</td></tr>
+<tr><td class="h"><a name="636"></a>636</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="637"></a>637</td><td></td><td></td><td></td><td></td><td class="s">L<perl> 5.8.</td></tr>
+<tr><td class="h"><a name="638"></a>638</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="639"></a>639</td><td></td><td></td><td></td><td></td><td class="s">A C compiler.</td></tr>
+<tr><td class="h"><a name="640"></a>640</td><td></td><td></td><td></td><td></td><td class="s">This module may happen to build with a C++ compiler as well, but don't rely on it, as no guarantee is made in this regard.</td></tr>
+<tr><td class="h"><a name="641"></a>641</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="642"></a>642</td><td></td><td></td><td></td><td></td><td class="s">L<Carp> (standard since perl 5), L<XSLoader> (standard since perl 5.006).</td></tr>
+<tr><td class="h"><a name="643"></a>643</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="644"></a>644</td><td></td><td></td><td></td><td></td><td class="s">Copy tests need L<Tie::Array> (standard since perl 5.005) and L<Tie::Hash> (since 5.002).</td></tr>
+<tr><td class="h"><a name="645"></a>645</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="646"></a>646</td><td></td><td></td><td></td><td></td><td class="s">Some uvar tests need L<Hash::Util::FieldHash> (standard since perl 5.009004).</td></tr>
+<tr><td class="h"><a name="647"></a>647</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="648"></a>648</td><td></td><td></td><td></td><td></td><td class="s">Glob tests need L<Symbol> (standard since perl 5.002).</td></tr>
+<tr><td class="h"><a name="649"></a>649</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="650"></a>650</td><td></td><td></td><td></td><td></td><td class="s">Threads tests need L<threads> and L<threads::shared>.</td></tr>
+<tr><td class="h"><a name="651"></a>651</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="652"></a>652</td><td></td><td></td><td></td><td></td><td class="s">=head1 SEE ALSO</td></tr>
+<tr><td class="h"><a name="653"></a>653</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="654"></a>654</td><td></td><td></td><td></td><td></td><td class="s">L<perlguts> and L<perlapi> for internal information about magic.</td></tr>
+<tr><td class="h"><a name="655"></a>655</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="656"></a>656</td><td></td><td></td><td></td><td></td><td class="s">L<perltie> and L<overload> for other ways of enhancing objects.</td></tr>
+<tr><td class="h"><a name="657"></a>657</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="658"></a>658</td><td></td><td></td><td></td><td></td><td class="s">=head1 AUTHOR</td></tr>
+<tr><td class="h"><a name="659"></a>659</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="660"></a>660</td><td></td><td></td><td></td><td></td><td class="s">Vincent Pit, C<< <perl at profvince.com> >>, L<http://www.profvince.com>.</td></tr>
+<tr><td class="h"><a name="661"></a>661</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="662"></a>662</td><td></td><td></td><td></td><td></td><td class="s">You can contact me by mail or on C<irc.perl.org> (vincent).</td></tr>
+<tr><td class="h"><a name="663"></a>663</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="664"></a>664</td><td></td><td></td><td></td><td></td><td class="s">=head1 BUGS</td></tr>
+<tr><td class="h"><a name="665"></a>665</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="666"></a>666</td><td></td><td></td><td></td><td></td><td class="s">Please report any bugs or feature requests to C<bug-variable-magic at rt.cpan.org>, or through the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Variable-Magic>. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.</td></tr>
+<tr><td class="h"><a name="667"></a>667</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="668"></a>668</td><td></td><td></td><td></td><td></td><td class="s">=head1 SUPPORT</td></tr>
+<tr><td class="h"><a name="669"></a>669</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="670"></a>670</td><td></td><td></td><td></td><td></td><td class="s">You can find documentation for this module with the perldoc command.</td></tr>
+<tr><td class="h"><a name="671"></a>671</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="672"></a>672</td><td></td><td></td><td></td><td></td><td class="s"> perldoc Variable::Magic</td></tr>
+<tr><td class="h"><a name="673"></a>673</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="674"></a>674</td><td></td><td></td><td></td><td></td><td class="s">Tests code coverage report is available at L<http://www.profvince.com/perl/cover/Variable-Magic>.</td></tr>
+<tr><td class="h"><a name="675"></a>675</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="676"></a>676</td><td></td><td></td><td></td><td></td><td class="s">=head1 COPYRIGHT & LICENSE</td></tr>
+<tr><td class="h"><a name="677"></a>677</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="678"></a>678</td><td></td><td></td><td></td><td></td><td class="s">Copyright 2007,2008,2009,2010,2011,2012 Vincent Pit, all rights reserved.</td></tr>
+<tr><td class="h"><a name="679"></a>679</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="680"></a>680</td><td></td><td></td><td></td><td></td><td class="s">This program is free software; you can redistribute it and/or modify it</td></tr>
+<tr><td class="h"><a name="681"></a>681</td><td></td><td></td><td></td><td></td><td class="s">under the same terms as Perl itself.</td></tr>
+<tr><td class="h"><a name="682"></a>682</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="683"></a>683</td><td></td><td></td><td></td><td></td><td class="s">=cut</td></tr>
+<tr><td class="h"><a name="684"></a>684</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="685"></a>685</td><td class="c3">1</td><td class="c3"><span title="Avg 16µs">16µs</span></td><td></td><td></td><td class="s">1; # End of Variable::Magic</td></tr>
+<tr><td class="s"><a name=""></a> </td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
+<tr><td class="h"><a name="Variable__Magic___wizard"></a></td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 39µs within Variable::Magic::_wizard which was called:
+# once (39µs+0s) by Variable::Magic::wizard at <a href="Variable-Magic-pm-377-block.html#336">line 336</a></div></div>sub Variable::Magic::_wizard; # xsub<br /> </td></tr>
+<tr><td class="h"><a name="Variable__Magic__cast"></a></td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 2.10ms (1.48+623µs) within Variable::Magic::cast which was called 208 times, avg 10µs/call:
+# 208 times (1.48ms+623µs) by B::Hooks::EndOfScope::on_scope_end at <a href="B-Hooks-EndOfScope-pm-376-block.html#44">line 44 of B/Hooks/EndOfScope.pm</a>, avg 10µs/call</div></div>sub Variable::Magic::cast; # xsub<br /> </td></tr>
+<tr><td class="h"><a name="Variable__Magic__getdata"></a></td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 367µs within Variable::Magic::getdata which was called 215 times, avg 2µs/call:
+# 215 times (367µs+0s) by B::Hooks::EndOfScope::on_scope_end at <a href="B-Hooks-EndOfScope-pm-376-block.html#40">line 40 of B/Hooks/EndOfScope.pm</a>, avg 2µs/call</div></div>sub Variable::Magic::getdata; # xsub<br /> </td></tr>
+</tbody></table></div>
+
+ <script type="text/javascript"> $(document).ready(function() {
+
+ $("#subs_table").tablesorter({
+ sortList: [[3,1]],
+ headers: {
+ 3: { sorter: 'fmt_time' },
+ 4: { sorter: 'fmt_time' }
+ }
+ });
+
+ } ); </script>
+
+ <div class="footer">Report produced by the
+ <a href="http://search.cpan.org/dist/Devel-NYTProf/">NYTProf 4.06</a>
+ Perl profiler, developed by
+ <a href="http://www.linkedin.com/in/timbunce">Tim Bunce</a> and
+ <a href="http://code.nytimes.com">Adam Kaplan</a>.
+ </div>
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projects / scpubgit/stemmatology.git / blobdiff