perl5 - Use a Perl 5 group of modules/features
Use a version of Perl and its feature set:
use perl5; # Same as 'use perl5 v5.10.0;' use perl5 v14.1; use perl5 14.1; use perl5-14.1;
Use a bundled feature set from a perl5 plugin:
perl5
use perl5-i; use perl5-2i; use perl5-modern; use perl5-yourShinyPlugin;
Or both:
use perl5 v14.1 -shiny;
The perl5 module lets you use a well known set of modules in one command.
use
It allows people to create plugins like perl5::foo and perl5::bar that are sets of useful modules that have been tested together and are known to create joy.
perl5::foo
perl5::bar
This module, perl5, is generally the base class to such a plugin.
This:
use perl5-foo;
Is equivalent in Perl to:
use perl5 '-foo';
The perl5 module takes the first argument in the use command, and uses it to find a plugin, like perl5::foo in this case.
perl5::foo is typically just a subclass of perl5. It invokes a set of modules for its caller.
If you use it with a version, like this:
use perl5 v14;
It is the same as saying:
use v5.14; use strict; use warnings; use feature ':5.14';
If you use perl5 with no arguments, like this:
use perl5;
use perl5 v10;
This module uses lexically-wrapped-goto-chaining-magic to correctly load a set of modules (including optional version requirements and import options) into the user's code. The API for specifying a perl5 plugin is very simple.
To create a plugin called perl5::foo that gets called like this:
Write some code like this:
package perl5::foo; use base 'perl5'; our $VERSION = 0.12; # These is the list of modules (with optional version and arguments) sub imports { return ( strict => warnings => features => [':5.10'], SomeModule => 0.22, OtherModule => 0.33, [option1 => 2], Module => [], # Don't invoke Module's import() method ); } 1;
This module was inspired by Michael Schwern's perl5i, and the talk he gave about it at the 2010 OSDC in Melbourne. By "inspired" I mean that I was perturbed by Schwern's non-TMTOWTDI attitude towards choosing a standard set of Perl modules for all of us.
THIS IS PERL! THERE ARE NO STANDARDS!
...and I told him so. I also promised that I would show him my feelings in code. Schwern, this is how I feel! (See also: perl5::i)
Special thanks to schwern, mstrout, audreyt, rodrigo and jesse for ideas and support.
Ingy döt Net <ingy@cpan.org>
Copyright 2011-2014. Ingy döt Net.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
See http://www.perl.com/perl/misc/Artistic.html
To install perl5, copy and paste the appropriate command in to your terminal.
cpanm
cpanm perl5
CPAN shell
perl -MCPAN -e shell install perl5
For more information on module installation, please visit the detailed CPAN module installation guide.