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    <p>I found this <a href="http://use.perl.org/articles/07/12/26/1628211.shtml" rel="noreferrer">article</a> useful.</p> <p>This <a href="http://www.regex-engineer.org/slides/perl510_regex.html" rel="noreferrer">one</a> is more focused on 5.10 Advanced Regular Expressions.</p> <p>And also <a href="http://www.perl.com/pub/a/2008/04/23/a-beginners-introduction-to-perl-510.html" rel="noreferrer">A beginners' Introduction to Perl 5.10</a>.</p> <p>Finally, this excellent <a href="http://www.perlmonks.org/?node_id=654086" rel="noreferrer">summary</a> on why you should start using Perl 5.10 and from which I extracted the following:</p> <ul> <li>state variables No more scoping variables with an outer curly block, or the naughty my $f if 0 trick (the latter is now a syntax error). </li> <li>defined-or No more $x = defined $y ? $y : $z, you may write $x = $y // $z instead. </li> <li>regexp improvements Lots of work done by dave_the_m to clean up the internals, which paved the way for demerphq to add all sorts of new cool stuff. </li> <li>smaller variable footprints Nicholas Clark worked on the implementations of SVs, AVs, HVs and other data structures to reduce their size to a point that happens to hit a sweet spot on 32-bit architectures </li> <li>smaller constant sub footprints Nicholas Clark reduced the size of constant subs (like use constant FOO => 2). The result when loading a module like POSIX is significant. </li> <li>stacked filetests you can now say if (-e -f -x $file). Perl 6 was supposed to allow this, but they moved in a different direction. Oh well. </li> <li>lexical $_ allows you to nest $_ (without using local). </li> <li>_ prototype you can now declare a sub with prototype <em>. If called with no arguments, gets fed with $</em> (allows you to replace builtins more cleanly). </li> <li>x operator on a list you can now say my @arr = qw(x y z) x 4. (Update: this feature was backported to the 5.8 codebase after having been implemented in blead, which is how Somni notices that it is available in 5.8.8). </li> <li>switch a true switch/given construct, inspired by Perl 6 </li> <li>smart match operator (~~) to go with the switch </li> <li>closure improvements dave_the_m thoroughly revamped the closure handling code to fix a number of buggy behaviours and memory leaks. </li> <li>faster Unicode lc, uc and /i are faster on Unicode strings. Improvements to the UTF-8 cache. </li> <li>improved sorts inplace sorts performed when possible, rather than using a temporary. Sort functions can be called recursively: you can sort a tree </li> <li>map in void context is no longer evil. Only morally. </li> <li>less opcodes used in the creation of anonymous lists and hashes. Faster pussycat! </li> <li>tainting improvements More things that could be tainted are marked as such (such as sprintf formats) </li> <li>$# and $* removed Less action at a distance </li> <li>perlcc and JPL removed These things were just bug magnets, and no-one cared enough about them. </li> </ul>
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    1. POWhere are some good resources for learning the new features of Perl 5.10?
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    1. USDavid S.
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    1. COheh, you beat me to it! I wrote that article :)
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    2. COAnd this is indeed a good article. I made sure to leave a pointer to your original work. I did not want people to think I wrote that.
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