/ 
Sub-Prototype-Util-0.02
River stage one • 1 direct dependent • 1 total dependent
/ Sub::Prototype::Util

NAME

Sub::Prototype::Util - Prototype-related utility routines.

VERSION

Version 0.02

SYNOPSIS

use Sub::Prototype::Util qw/flatten recall/;

my @a = qw/a b c/;
my @args = ( \@a, 1, { d => 2 }, undef, 3 );

my @flat = flatten '\@$;$', @args; # ('a', 'b', 'c', 1, { d => 2 })
recall 'CORE::push', @args; # @a contains 'a', 'b', 'c', 1, { d => 2 }, undef, 3

DESCRIPTION

Prototypes are evil, but sometimes you just have to bear with them, especially when messing with core functions. This module provides several utilities aimed at facilitating "overloading" of prototyped functions.

They all handle 5.10's _ prototype.

FUNCTIONS

flatten $proto, @args

Flattens the array @args according to the prototype $proto. When @args is what @_ is after calling a subroutine with prototype $proto, flatten returns the list of what @_ would have been if there were no prototype.

recall $name, @args

Calls the function $name with the prototyped argument list @args. That is, @args should be what @_ is when you define a subroutine with the same prototype as $name. For example,

my $a = [ ];
recall 'CORE::push', $a, 1, 2, 3;

will call push @$a, 1, 2, 3 and so fill the arrayref $a with 1, 2, 3. This is especially needed for core functions because you can't goto into them.

EXPORT

The functions "flatten" and "recall" are only exported on request, either by providing their name or by the ':funcs' and ':all' tags.

DEPENDENCIES

Carp, Exporter (core modules since perl 5), Scalar::Util (since 5.7.3).

AUTHOR

Vincent Pit, <perl at profvince.com>, http://www.profvince.com.

You can contact me by mail or on #perl @ FreeNode (vincent or Prof_Vince).

BUGS

Please report any bugs or feature requests to bug-sub-prototype-util at rt.cpan.org, or through the web interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Sub-Prototype-Util. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.

SUPPORT

You can find documentation for this module with the perldoc command.

perldoc Sub::Prototype::Util

Tests code coverage report is available at http://www.profvince.com/perl/cover/Sub-Prototype-Util.

COPYRIGHT & LICENSE

Copyright 2008 Vincent Pit, all rights reserved.

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