System::Sub::AutoLoad - Auto-wrap external commands as DWIM subs
Contents
Copyright & License
Copyright © 2012 Olivier Mengué.
This library is free software; you can redistribute it and/or modify it under the same terms as Perl 5
itself.
perl v5.36.0 2022-12-06 System::Sub::AutoLoad(3pm)
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.
Implementationdetails
This module exports an AUTOLOAD sub that will import the sub with "System::Sub" at its first call.
Name
System::Sub::AutoLoad - Auto-wrap external commands as DWIM subs
Synopsis
Basicusage
Any unknown sub will become a "System::Sub".
use System::Sub::AutoLoad;
my $hostname = hostname();
Usagewithforwarddeclaration
Allows to avoid using parentheses. "System::Sub" import stays lazy.
use System::Sub::AutoLoad qw(hostname);
my $hostname = hostname;
Usagewithforwarddeclarationcommandoptions
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;
Version
version 0.162800
