perl-lexical-underscore-0.1.0-2.mga4.noarch.rpm


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Description

perl-lexical-underscore - Access your caller's lexical underscore

Distribution: Mageia 4.1
Repository: Mageia Core i586
Package name: perl-lexical-underscore
Package version: 0.1.0
Package release: 2.mga4
Package architecture: noarch
Package type: rpm
Installed size: 32.35 KB
Download size: 18.66 KB
Official Mirror: distrib-coffee.ipsl.jussieu.fr
Starting with Perl 5.10, it is possible to create a lexical version of the Perl default variable $_. Certain Perl constructs like the "given" keyword automatically use a lexical $_ rather than the global $_. It is occasionallly useful for a sub to be able to access its caller's $_ variable regardless of whether it was lexical or not. The "(_)" sub prototype is the official way to do so, however there are sometimes disadvantages to this; in particular it can only appear as the final required argument in a prototype, and there is no way of the sub differentiating between an explicitly passed argument and $_. This caused me problems with Scalar::Does, because I wanted to enable the "does" function to be called as either: does($thing, $role); does($role); # assumes $thing = $_ With "_" in the prototype, $_ was passed to the function at the end of its argument list; effectively "does($role, $thing)", making it impossible to tell which argument was the role. Enter "lexical::underscore" which allows you to access your caller's lexical $_ variable as easily as: ${lexical::underscore()} You can access lexical $_ further up the call stack using: ${lexical::underscore($level)} If you happen to ask for $_ at a level where no lexical $_ is available, you get the global $_ instead. This module does work on Perl 5.8 but as there is no lexical $_, always returns the global $_.

Provides

  • perl(lexical::underscore)
  • perl-lexical-underscore == 0.1.0-2.mga4

    Install Howto

    1. Enable Mageia Core repository on "Install and Remove Software"
    2. Update packages list:
      # urpmi.update -a
    3. Install perl-lexical-underscore rpm package:
      # urpmi perl-lexical-underscore

    Files

    • /usr/lib/perl5/vendor_perl/5.18.1/lexical/underscore.pm
    • /usr/share/doc/perl-lexical-underscore/Changes
    • /usr/share/doc/perl-lexical-underscore/LICENSE
    • /usr/share/doc/perl-lexical-underscore/META.yml
    • /usr/share/doc/perl-lexical-underscore/MYMETA.yml
    • /usr/share/doc/perl-lexical-underscore/README
    • /usr/share/doc/perl-lexical-underscore/SIGNATURE
    • /usr/share/man/man3/lexical::underscore.3pm.xz

    Changelog

    2013-10-21 - umeabot <umeabot> 0.1.0-2.mga4 + Revision: 537439 - Mageia 4 Mass Rebuild

    2013-09-26 - sander85 <sander85> 0.1.0-1.mga4 + Revision: 487018 - imported package perl-lexical-underscore

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