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Manual Reference Pages  -  SYSTEM::SUB::AUTOLOAD (3)

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NAME

System::Sub::AutoLoad - Auto-wrap external commands as DWIM subs

CONTENTS

VERSION

version 0.150960

SYNOPSIS

    Basic usage

Any unknown sub will become a System::Sub.



    use System::Sub::AutoLoad;

    my $hostname = hostname();



    Usage with forward declaration

Allows to avoid using parentheses. System::Sub import stays lazy.



    use System::Sub::AutoLoad qw(hostname);

    my $hostname = hostname;



    Usage with forward declaration command options

Options definitions will be checked lazily at the first call to the AUTOLOAD for that sub.



    use System::Sub::AutoLoad hostname => [ 0 => /bin/hostname ];

    my $hostname = hostname;



DESCRIPTION

Any unknown sub in your code will be transformed into a System::Sub at its first call. This is lazy <http://en.wikipedia.org/wiki/Lazy_evaluation> import for System::Sub.

To avoid using parentheses after the sub name, you usually have to predeclare the sub with either a forward declaration (a sub without body such as sub foo;) or with the subs module. With Sytem::Sub::AutoLoad you can simply list the subs names on the use line and that will be done for you.

You can also pass System::Sub options to the sub, but they will be lazily analysed: this is the full System::Sub power, but with lazy import.

    Implementation details

This module exports an AUTOLOAD sub that will import the sub with System::Sub at its first call.

AUTHOR

Olivier Mengue\k:'dolmen@cpan.org.

COPYRIGHT & LICENSE

Copyright X 2012 Olivier Mengue\k:'\h |\n:u.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl 5 itself.

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perl v5.20.3 SYSTEM::SUB::AUTOLOAD (3) 2015-04-06

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