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1 | |
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2 | package Moose::Meta::Attribute::Native::Trait::Array; |
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3 | use Moose::Role; |
4 | |
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5 | our $VERSION = '1.15'; |
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6 | $VERSION = eval $VERSION; |
7 | our $AUTHORITY = 'cpan:STEVAN'; |
8 | |
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9 | use Moose::Meta::Method::Accessor::Native::Array::accessor; |
10 | use Moose::Meta::Method::Accessor::Native::Array::clear; |
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11 | use Moose::Meta::Method::Accessor::Native::Array::count; |
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12 | use Moose::Meta::Method::Accessor::Native::Array::delete; |
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13 | use Moose::Meta::Method::Accessor::Native::Array::elements; |
14 | use Moose::Meta::Method::Accessor::Native::Array::first; |
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15 | use Moose::Meta::Method::Accessor::Native::Array::get; |
16 | use Moose::Meta::Method::Accessor::Native::Array::grep; |
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17 | use Moose::Meta::Method::Accessor::Native::Array::insert; |
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18 | use Moose::Meta::Method::Accessor::Native::Array::is_empty; |
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19 | use Moose::Meta::Method::Accessor::Native::Array::join; |
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20 | use Moose::Meta::Method::Accessor::Native::Array::map; |
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21 | use Moose::Meta::Method::Accessor::Native::Array::natatime; |
22 | use Moose::Meta::Method::Accessor::Native::Array::pop; |
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23 | use Moose::Meta::Method::Accessor::Native::Array::push; |
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24 | use Moose::Meta::Method::Accessor::Native::Array::reduce; |
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25 | use Moose::Meta::Method::Accessor::Native::Array::set; |
26 | use Moose::Meta::Method::Accessor::Native::Array::shift; |
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27 | use Moose::Meta::Method::Accessor::Native::Array::shuffle; |
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28 | use Moose::Meta::Method::Accessor::Native::Array::splice; |
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29 | use Moose::Meta::Method::Accessor::Native::Array::sort; |
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30 | use Moose::Meta::Method::Accessor::Native::Array::sort_in_place; |
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31 | use Moose::Meta::Method::Accessor::Native::Array::uniq; |
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32 | use Moose::Meta::Method::Accessor::Native::Array::unshift; |
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33 | |
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34 | with 'Moose::Meta::Attribute::Native::Trait'; |
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35 | |
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36 | sub _helper_type { 'ArrayRef' } |
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37 | |
38 | no Moose::Role; |
39 | |
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40 | 1; |
41 | |
42 | __END__ |
43 | |
44 | =pod |
45 | |
46 | =head1 NAME |
47 | |
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48 | Moose::Meta::Attribute::Native::Trait::Array - Helper trait for array delegation |
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49 | |
50 | =head1 SYNOPSIS |
51 | |
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52 | package Stuff; |
53 | use Moose; |
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54 | |
55 | has 'options' => ( |
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56 | traits => ['Array'], |
57 | is => 'ro', |
58 | isa => 'ArrayRef[Str]', |
59 | default => sub { [] }, |
60 | handles => { |
61 | all_options => 'elements', |
62 | add_option => 'push', |
63 | map_options => 'map', |
64 | filter_options => 'grep', |
65 | find_option => 'first', |
66 | get_option => 'get', |
67 | join_options => 'join', |
68 | count_options => 'count', |
69 | has_options => 'count', |
70 | has_no_options => 'is_empty', |
71 | sorted_options => 'sort', |
72 | }, |
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73 | ); |
74 | |
75 | no Moose; |
76 | 1; |
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77 | |
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78 | =head1 DESCRIPTION |
79 | |
80 | This module provides an Array attribute which provides a number of |
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81 | array operations. |
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82 | |
83 | =head1 PROVIDED METHODS |
84 | |
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85 | =over 4 |
86 | |
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87 | =item * B<count> |
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88 | |
89 | Returns the number of elements in the array. |
90 | |
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91 | $stuff = Stuff->new; |
92 | $stuff->options( [ "foo", "bar", "baz", "boo" ] ); |
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93 | |
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94 | print $stuff->count_options; # prints 4 |
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95 | |
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96 | This method does not accept any arguments. |
97 | |
98 | =item * B<is_empty> |
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99 | |
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100 | Returns a boolean value that is true when the array has no elements. |
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101 | |
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102 | $stuff->has_no_options ? die "No options!\n" : print "Good boy.\n"; |
103 | |
104 | This method does not accept any arguments. |
105 | |
106 | =item * B<elements> |
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107 | |
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108 | Returns all of the elements of the array as an array (not an array reference). |
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109 | |
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110 | my @option = $stuff->all_options; |
111 | print "@options\n"; # prints "foo bar baz boo" |
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112 | |
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113 | This method does not accept any arguments. |
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114 | |
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115 | =item * B<get($index)> |
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116 | |
117 | Returns an element of the array by its index. You can also use negative index |
118 | numbers, just as with Perl's core array handling. |
119 | |
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120 | my $option = $stuff->get_option(1); |
121 | print "$option\n"; # prints "bar" |
122 | |
123 | If the specified element does not exist, this will return C<undef>. |
124 | |
125 | This method does accepts just one argument. |
126 | |
127 | =item * B<pop> |
128 | |
129 | Just like Perl's builtin C<pop>. |
130 | |
131 | This method does not accept any arguments. |
132 | |
133 | =item * B<push($value1, $value2, value3 ...)> |
134 | |
135 | Just like Perl's builtin C<push>. Returns the number of elements in the new |
136 | array. |
137 | |
138 | This method accepts any number of arguments. |
139 | |
140 | =item * B<shift> |
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141 | |
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142 | Just like Perl's builtin C<shift>. |
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143 | |
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144 | This method does not accept any arguments. |
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145 | |
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146 | =item * B<unshift($value1, $value2, value3 ...)> |
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147 | |
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148 | Just like Perl's builtin C<unshift>. Returns the number of elements in the new |
149 | array. |
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150 | |
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151 | This method accepts any number of arguments. |
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152 | |
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153 | =item * B<splice($offset, $length, @values)> |
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154 | |
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155 | Just like Perl's builtin C<splice>. In scalar context, this returns the last |
156 | element removed, or C<undef> if no elements were removed. In list context, |
157 | this returns all the elements removed from the array. |
158 | |
159 | This method requires at least one argument. |
160 | |
161 | =item * B<first( sub { ... } )> |
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162 | |
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163 | This method returns the first item matching item in the array, just like |
164 | L<List::Util>'s C<first> function. The matching is done with a subroutine |
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165 | reference you pass to this method. The subroutine will be called against each |
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166 | element in the array until one matches or all elements have been checked. |
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167 | |
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168 | my $found = $stuff->find_option( sub {/^b/} ); |
169 | print "$found\n"; # prints "bar" |
170 | |
171 | This method requires a single argument. |
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172 | |
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173 | =item * B<grep( sub { ... } )> |
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174 | |
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175 | This method returns every element matching a given criteria, just like Perl's |
176 | core C<grep> function. This method requires a subroutine which implements the |
177 | matching logic. |
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178 | |
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179 | my @found = $stuff->filter_options( sub {/^b/} ); |
180 | print "@found\n"; # prints "bar baz boo" |
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181 | |
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182 | This method requires a single argument. |
183 | |
184 | =item * B<map( sub { ... } )> |
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185 | |
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186 | This method transforms every element in the array and returns a new array, |
187 | just like Perl's core C<map> function. This method requires a subroutine which |
188 | implements the transformation. |
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189 | |
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190 | my @mod_options = $stuff->map_options( sub { $_ . "-tag" } ); |
191 | print "@mod_options\n"; # prints "foo-tag bar-tag baz-tag boo-tag" |
192 | |
193 | This method requires a single argument. |
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194 | |
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195 | =item * B<reduce( sub { ... } )> |
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196 | |
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197 | This method turns an array into a single value, by passing a function the |
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198 | value so far and the next value in the array, just like L<List::Util>'s |
199 | C<reduce> function. The reducing is done with a subroutine reference you pass |
200 | to this method. |
201 | |
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202 | my $found = $stuff->reduce_options( sub { $_[0] . $_[1] } ); |
203 | print "$found\n"; # prints "foobarbazboo" |
204 | |
205 | This method requires a single argument. |
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206 | |
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207 | =item * B<sort> |
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208 | |
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209 | =item * B<sort( sub { ... } )> |
210 | |
211 | Returns the elements of the array in sorted order. |
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212 | |
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213 | You can provide an optional subroutine reference to sort with (as you can with |
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214 | Perl's core C<sort> function). However, instead of using C<$a> and C<$b> in |
215 | this subroutine, you will need to use C<$_[0]> and C<$_[1]>. |
216 | |
217 | # ascending ASCIIbetical |
218 | my @sorted = $stuff->sort_options(); |
219 | |
220 | # Descending alphabetical order |
221 | my @sorted_options = $stuff->sort_options( sub { lc $_[1] cmp lc $_[0] } ); |
222 | print "@sorted_options\n"; # prints "foo boo baz bar" |
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223 | |
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224 | This method accepts a single argument. |
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225 | |
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226 | =item * B<sort_in_place> |
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227 | |
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228 | =item * B<sort_in_place( sub { ... } )> |
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229 | |
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230 | Sorts the array I<in place>, modifying the value of the attribute. |
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231 | |
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232 | You can provide an optional subroutine reference to sort with (as you can with |
233 | Perl's core C<sort> function). However, instead of using C<$a> and C<$b>, you |
234 | will need to use C<$_[0]> and C<$_[1]> instead. |
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235 | |
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236 | This method does not define a return value. |
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237 | |
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238 | This method accepts a single argument. |
239 | |
240 | =item * B<shuffle> |
241 | |
242 | Returns the elements of the array in random order, like C<shuffle> from |
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243 | L<List::Util>. |
244 | |
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245 | This method does not accept any arguments. |
246 | |
247 | =item * B<uniq> |
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248 | |
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249 | Returns the array with all duplicate elements removed, like C<uniq> from |
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250 | L<List::MoreUtils>. |
251 | |
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252 | This method does not accept any arguments. |
253 | |
254 | =item * B<join($str)> |
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255 | |
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256 | Joins every element of the array using the separator given as argument, just |
257 | like Perl's core C<join> function. |
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258 | |
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259 | my $joined = $stuff->join_options(':'); |
260 | print "$joined\n"; # prints "foo:bar:baz:boo" |
261 | |
262 | This method requires a single argument. |
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263 | |
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264 | =item * B<set($index, $value)> |
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265 | |
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266 | Given an index and a value, sets the specified array element's value. |
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267 | |
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268 | This method returns the value at C<$index> after the set. |
269 | |
270 | This method requires two arguments. |
271 | |
272 | =item * B<delete($index)> |
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273 | |
274 | Removes the element at the given index from the array. |
275 | |
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276 | This method returns the deleted value. Note that if no value exists, it will |
277 | return C<undef>. |
278 | |
279 | This method requires one argument. |
280 | |
281 | =item * B<insert($index, $value)> |
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282 | |
283 | Inserts a new element into the array at the given index. |
284 | |
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285 | This method returns the new value at C<$index>. |
286 | |
287 | This method requires two arguments. |
288 | |
289 | =item * B<clear> |
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290 | |
291 | Empties the entire array, like C<@array = ()>. |
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292 | |
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293 | This method does not define a return value. |
294 | |
295 | This method does not accept any arguments. |
296 | |
297 | =item * B<accessor($index)> |
298 | |
299 | =item * B<accessor($index, $value)> |
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300 | |
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301 | This method provides a get/set accessor for the array, based on array indexes. |
302 | If passed one argument, it returns the value at the specified index. If |
303 | passed two arguments, it sets the value of the specified index. |
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304 | |
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305 | When called as a setter, this method returns the new value at C<$index>. |
306 | |
307 | This method accepts one or two arguments. |
308 | |
309 | =item * B<natatime($n)> |
310 | |
311 | =item * B<natatime($n, $code)> |
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312 | |
313 | This method returns an iterator which, on each call, returns C<$n> more items |
314 | from the array, in order, like C<natatime> from L<List::MoreUtils>. A coderef |
315 | can optionally be provided; it will be called on each group of C<$n> elements |
316 | in the array. |
317 | |
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318 | This method accepts one or two arguments. |
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319 | |
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320 | =back |
321 | |
322 | =head1 BUGS |
323 | |
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324 | See L<Moose/BUGS> for details on reporting bugs. |
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325 | |
326 | =head1 AUTHOR |
327 | |
328 | Stevan Little E<lt>stevan@iinteractive.comE<gt> |
329 | |
330 | =head1 COPYRIGHT AND LICENSE |
331 | |
332 | Copyright 2007-2009 by Infinity Interactive, Inc. |
333 | |
334 | L<http://www.iinteractive.com> |
335 | |
336 | This library is free software; you can redistribute it and/or modify |
337 | it under the same terms as Perl itself. |
338 | |
339 | =cut |