NAME
once - Execute code only once throughout the program's lifetime
VERSION
version 1.101420
SYNOPSIS
use once;
sub setup {
my $self = shift;
ONCE {
print "run only once however often setup() is called"
};
# other_things();
}
DESCRIPTION
This module provides a way to run code only once, no matter how often
the surrounding code is called.
METHODS
ONCE
This subroutine is exported automatically. It takes a code block and
executes it only the first time that this specific call of "ONCE" is
encountered. This might be useful, for example, in a situation where you
initialize an object but only want to do it the first time any object of
that class is initialized, perhaps to install methods or setup some
other data.
INSTALLATION
See perlmodinstall for information and options on installing Perl
modules.
BUGS AND LIMITATIONS
No bugs have been reported.
Please report any bugs or feature requests through the web interface at
<http://rt.cpan.org/Public/Dist/Display.html?Name=once>.
AVAILABILITY
The latest version of this module is available from the Comprehensive
Perl Archive Network (CPAN). Visit <http://www.perl.com/CPAN/> to find a
CPAN site near you, or see <http://search.cpan.org/dist/once/>.
The development version lives at <http://github.com/hanekomu/once/>.
Instead of sending patches, please fork this project using the standard
git and github infrastructure.
AUTHOR
Marcel Gruenauer <marcel@cpan.org>
COPYRIGHT AND LICENSE
This software is copyright (c) 2009 by Marcel Gruenauer.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.