Access to standard module source code?

chengchl has asked for the wisdom of the Perl Monks concerning the following question:

Hi Perl Experts

I was wondering whether we have chance to look at the source code of the Perl standard modules like List::MoreUtils?

I used some built-in functions and was amazed by how they work that well. Would be of great interest and curiosity to see what is inside but I searched online didn't get my luck. Any one knows? Thanks in advance!

Comment on Access to standard module source code?

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Re: Access to standard module source code? by choroba (Cardinal) on Nov 15, 2017 at 23:18 UTC
CPAN has all the sources. For example, the XS implementation or the pure Perl one. ($q=q:Sq=~/;[c](.)(.)/;chr(-\|\|-\|5+lengthSq)`"S\|oS2"`map{chr \|+ord }map{substrSq`S_+\|`\|}3E\|-\|`7**2-3:)=~y+S\|`+$1,++print+eval$q,q,a, [download]	[reply] [d/l]
Re: Access to standard module source code? by 1nickt (Canon) on Nov 15, 2017 at 23:31 UTC
Hi, you can also pass the `-m` flag to perldoc, which will display the entire source of the module. Shell command: `$ perldoc -m List::MoreUtils` [download] Output: `package List::MoreUtils; use 5.008_001; use strict; use warnings; my $have_xs; ...` [download] Hope this helps! The way forward always starts with a minimal test.	[reply] [d/l] [select]