How To Identify or List Core Modules

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

It's apparently never come up for me in nearly two decades of using Perl -- two questions:

How do I determine if a module suggested to me is Core?
Where do I get a list of Core modules for a given Perl release?

A reasonable alternative to the first one, of course, is to simply write a test script and see if it complains; however, this technically only means it came with my distribution, and is not a foolproof indicator of "Coreness".

I ask because I followed a link for Sub::Install thinking it might lead to a neat way to modularize and make dynamically loadable code; saw the version as 0.9xxx and thought, "Hmm, I wonder if this is Core".

I then compared it to File::Findand did notice a few subtle differences in the way the bread crumb links at the top were assembled; but rather than reverse engineer and guess at the bits, I thought I'd see if there was a more authoritative reference someplace.

Update:

I did use Super Search, but, typical of my first efforts to find things with search engines, I came up with a bunch of links that didn't seem to answer the questions. Apparently, my Search-Fu is not strong.

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Re: How To Identify or List Core Modules by choroba (Cardinal) on Jun 23, 2015 at 13:10 UTC
Obvious answer to 1: corelist. `corelist Time::Piece` [download] Obvious answer to 2: corelist. `corelist -v 5.8.8` [download] لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ	[reply] [d/l] [select]
Re: How To Identify or List Core Modules by Corion (Patriarch) on Jun 23, 2015 at 13:08 UTC
Module::CoreList contains the information on which modules were when in core.	[reply]
Re: How To Identify or List Core Modules by marinersk (Priest) on Jun 23, 2015 at 13:12 UTC
Thank you both. :-) Update: I suppose the question I should have also asked is: How should I have been able to answer that question for myself? I've never taken a formal class on Perl. Was shown enough to get started, asked a few stupid questions, got the hang of it, started programming Perl less like a `C`programmer over time, and suddenly more than a decade zipped by. :-)	[reply] [d/l]
Re^2: How To Identify or List Core Modules by 1nickt (Canon) on Jun 23, 2015 at 13:46 UTC
~~At the risk of seeming churlish, may I ask if you tried a search of any kind?~~ UPDATE: I see that you did try searching. In my experience the more natural you can make your query, the more relevant the results. For example, I tried this on Google: Which are the core Perl modules? About 866,000 results (0.29 seconds) Search Results Core modules (A) - perldoc.perl.org perldoc.perl.org/index-modules-A.html Perl Documentation for modules that form part of the standard distribution of perl. Core modules (C) - perldoc.perl.org perldoc.perl.org/index-modules-C.html Perl Core modules (C) ... CPAN - query, download and build perl modules from CPAN sites; CPAN::Debug - internal debugging for CPAN.pm; CPAN::Distroprefs ... Core modules (H) - perldoc.perl.org perldoc.perl.org/index-modules-H.html Perl Core modules (H). Perl 5 version 20.1 documentation. Go to top ... perldoc.perl.org - Official documentation for the Perl programming language. Core modules (T) - perldoc.perl.org perldoc.perl.org/5.8.9/index-modules-T.html Perl Home > Core modules (T) ... screen output using ANSI escape sequences; Term::Cap - Perl termcap interface; Term::Complete - Perl word completion module ... How can I tell if a Perl module is core or part of the standard ... stackoverflow.com/.../how-can-i-tell-if-a-perl-module-is-core-or-part-of-... Jan 12, 2010 - For the really lazy, there's the Core Modules list on the perldoc.perl.org website. From coomand-line: Let's say that you want to know whether module Tie::Hash is installed. To find out, execute the following from the command line: Which core modules did Perl 5.x have? - Perl Monks www.perlmonks.org/?node_id=670914 PerlMonks Feb 28, 2008 - 5 posts - ‎3 authors is there someplace a comprehensive list of core modules shipped with Perl, grouped by the version? I have to remain compatible with 5.6.0 in ... Module::CoreList - search.cpan.org search.cpan.org/perldoc?Module%3A%3ACoreList CPAN Module::CoreList - what modules shipped with versions of perl ... Module::CoreList provides information on which core and dual-life modules shipped with each ... etc...	[reply]
Re^3: How To Identify or List Core Modules by marto (Cardinal) on Jun 23, 2015 at 14:02 UTC
Please note that the 'core modules' sections of http://perldoc.perl.org are out of date. For example there's no J section yet JSON::PP has been core for some time: `corelist JSON::PP Data for 2014-05-27 JSON::PP was first released with perl v5.13.9` [download] I've raised the issue in the past, but will do so again now.	[reply] [d/l]
Re^4: How To Identify or List Core Modules by toolic (Bishop) on Jun 23, 2015 at 14:13 UTC
Re^5: How To Identify or List Core Modules by marto (Cardinal) on Jun 23, 2015 at 14:17 UTC
Re^2: How To Identify or List Core Modules by karlgoethebier (Abbot) on Jun 23, 2015 at 17:31 UTC
"...answer that question for myself?" Perhaps like this? " I've never taken a formal class on Perl." Never mind. Perhaps this spared you another painful experience (i'm a bit unsure "ob man dass so sagt"). I saw some assignments from such a "formal class on Perl". Holy crap! Weird constructs and inquisitorial questions without any practical orientation. I doubt very much that you would have learned anything about corelist in such "a formal class". Best regards, Karl «The Crux of the Biscuit is the Apostrophe»	[reply]
Re^3: How To Identify or List Core Modules by marinersk (Priest) on Jun 23, 2015 at 18:02 UTC
That's two of you now who have leaned on Google rather than Super Search. I'll take that as a cluebat. :-)	[reply]
Re^4: How To Identify or List Core Modules by karlgoethebier (Abbot) on Jun 23, 2015 at 18:13 UTC
Re^5: How To Identify or List Core Modules by marinersk (Priest) on Jun 23, 2015 at 18:43 UTC
Some notes below your chosen depth have not been shown here
Re^4: How To Identify or List Core Modules by Anonymous Monk on Jun 23, 2015 at 18:29 UTC