PerlFAQ sync.

p4raw-id: //depot/perl@23509

diff --git a/pod/perlfaq3.pod b/pod/perlfaq3.pod
index 7c6eb5f..411e857 100644 (file)
--- a/pod/perlfaq3.pod
+++ b/pod/perlfaq3.pod
@@ -1,6 +1,6 @@
 =head1 NAME
 
-perlfaq3 - Programming Tools ($Revision: 1.40 $, $Date: 2004/10/19 17:02:27 $)
+perlfaq3 - Programming Tools ($Revision: 1.41 $, $Date: 2004/11/03 22:45:32 $)
 
 =head1 DESCRIPTION
 
@@ -218,18 +218,24 @@ If you're on Unix, you already have an IDE--Unix itself.  The UNIX
 philosophy is the philosophy of several small tools that each do one
 thing and do it well.  It's like a carpenter's toolbox.
 
-If you want an IDE, check the following:
+If you want an IDE, check the following (in alphabetical order, not
+order of preference):
 
 =over 4
 
+=item Eclipse
+
+The Eclipse Perl Integration Project integrates Perl 
+editing/debugging with Eclipse.
+
+The website for the project is http://e-p-i-c.sf.net/
+
 =item Komodo
 
-ActiveState's cross-platform (as of April 2001 Windows and Linux),
-multi-language IDE has Perl support, including a regular expression
+ActiveState's cross-platform (as of October 2004, that's Windows, Linux,
+and Solaris), multi-language IDE has Perl support, including a regular expression
 debugger and remote debugging
-( http://www.ActiveState.com/Products/Komodo/ ).  (Visual
-Perl, a Visual Studio.NET plug-in is currently (early 2001) in beta
-( http://www.ActiveState.com/Products/VisualPerl/index.html )).
+( http://www.ActiveState.com/Products/Komodo/ ).
 
 =item Open Perl IDE
 
@@ -238,6 +244,11 @@ Open Perl IDE is an integrated development environment for writing
 and debugging Perl scripts with ActiveState's ActivePerl distribution
 under Windows 95/98/NT/2000.
 
+=item OptiPerl
+
+( http://www.optiperl.com/ ) is a Windows IDE with simulated CGI
+environment, including debugger and syntax highlighting editor.
+
 =item PerlBuilder
 
 ( http://www.solutionsoft.com/perl.htm ) is an integrated development
@@ -248,10 +259,11 @@ environment for Windows that supports Perl development.
 ( http://helpconsulting.net/visiperl/ )
 From Help Consulting, for Windows.
 
-=item OptiPerl
+=item Visual Perl
+
+( http://www.activestate.com/Products/Visual_Perl/ )
+Visual Perl is a Visual Studio.NET plug-in from ActiveState.
 
-( http://www.optiperl.com/ ) is a Windows IDE with simulated CGI
-environment, including debugger and syntax highlighting editor.
 
 =back
 

diff --git a/pod/perlfaq4.pod b/pod/perlfaq4.pod
index 0e62c2b..815a9ea 100644 (file)
--- a/pod/perlfaq4.pod
+++ b/pod/perlfaq4.pod
@@ -1,6 +1,6 @@
 =head1 NAME
 
-perlfaq4 - Data Manipulation ($Revision: 1.55 $, $Date: 2004/10/11 05:06:29 $)
+perlfaq4 - Data Manipulation ($Revision: 1.56 $, $Date: 2004/11/03 22:47:56 $)
 
 =head1 DESCRIPTION
 
@@ -1715,19 +1715,15 @@ sorting the keys as shown in an earlier question.
 
 =head2 What happens if I add or remove keys from a hash while iterating over it?
 
-Don't do that. :-)
+(contributed by brian d foy)
 
-[lwall] In Perl 4, you were not allowed to modify a hash at all while
-iterating over it.  In Perl 5 you can delete from it, but you still
-can't add to it, because that might cause a doubling of the hash table,
-in which half the entries get copied up to the new top half of the
-table, at which point you've totally bamboozled the iterator code.
-Even if the table doesn't double, there's no telling whether your new
-entry will be inserted before or after the current iterator position.
+The easy answer is "Don't do that!"
 
-Either treasure up your changes and make them after the iterator finishes
-or use keys to fetch all the old keys at once, and iterate over the list
-of keys.
+If you iterate through the hash with each(), you can delete the key
+most recently returned without worrying about it.  If you delete or add
+other keys, the iterator may skip or double up on them since perl
+may rearrange the hash table.  See the
+entry for C<each()> in L<perlfunc>.
 
 =head2 How do I look up a hash element by value?
 

diff --git a/pod/perlfaq6.pod b/pod/perlfaq6.pod
index d19ba36..6b0f3bb 100644 (file)
--- a/pod/perlfaq6.pod
+++ b/pod/perlfaq6.pod
@@ -1,6 +1,6 @@
 =head1 NAME
 
-perlfaq6 - Regular Expressions ($Revision: 1.26 $, $Date: 2004/10/25 18:47:04 $)
+perlfaq6 - Regular Expressions ($Revision: 1.27 $, $Date: 2004/11/03 22:52:16 $)
 
 =head1 DESCRIPTION
 
@@ -151,7 +151,19 @@ Up to Perl 5.8.0, $/ has to be a string.  This may change in 5.10,
 but don't get your hopes up. Until then, you can use these examples
 if you really need to do this.
 
-Use the four argument form of sysread to continually add to
+If you have File::Stream, this is easy.
+
+                        use File::Stream;
+             my $stream = File::Stream->new(
+                  $filehandle,
+                  separator => qr/\s*,\s*/,
+                  );
+
+                        print "$_\n" while <$stream>;
+
+If you don't have File::Stream, you have to do a little more work.
+
+You can use the four argument form of sysread to continually add to
 a buffer.  After you add to the buffer, you check if you have a
 complete line (using your regular expression).
 

diff --git a/pod/perlfaq7.pod b/pod/perlfaq7.pod
index e6d4e5c..54e91bd 100644 (file)
--- a/pod/perlfaq7.pod
+++ b/pod/perlfaq7.pod
@@ -1,6 +1,6 @@
 =head1 NAME
 
-perlfaq7 - General Perl Language Issues ($Revision: 1.17 $, $Date: 2004/10/19 22:53:50 $)
+perlfaq7 - General Perl Language Issues ($Revision: 1.18 $, $Date: 2004/11/03 22:54:08 $)
 
 =head1 DESCRIPTION
 
@@ -97,6 +97,16 @@ See L<perllexwarn> for more details.
        no warnings;          # temporarily turn off warnings
        $a = $b + $c;         # I know these might be undef
     }
+    
+Additionally, you can enable and disable categories of warnings.
+You turn off the categories you want to ignore and you can still
+get other categories of warnings.  See L<perllexwarn> for the
+complete details, including the category names and hierarchy.
+
+       {
+       no warnings 'uninitialized';
+       $a = $b + $c;
+       }
 
 If you have an older version of Perl, the C<$^W> variable (documented
 in L<perlvar>) controls runtime warnings for a block: