Perl6::Builtins - Provide Perl 5 versions of the new Perl 6 builtins

This document describes Perl6::Builtins version 0.0.3

    use Perl6::Builtins qw( system );

    system $system_cmd
        or die "Could not $system_cmd: $!";

    my $package = caller->{package};
    my $file    = caller->{file};
    my $line    = caller->{line};

  

Several of the builtins in Perl 6 have different (i.e. more useful, less confusing) behaviours than their Perl 5 counterparts. This module provides Perl 5 versions of those builtins.

system

If system is loaded on the use line, the builtin is altered so that it returns true if the system command suceeds. In any other context, the command returns the value in $!.

caller

If caller is loaded on the use line, the builtin is altered so that it behaves as in Perl 5 in scalar and list contexts. However, if the result of a call to caller is used as a hash reference it returns a reference to a hash with the following keys:

'package'

'file'

'line'

'sub'

'args'

'want'

'eval'

'require'

'hints'

'bitmask'

with each of the values for these keys being the equivalent item from the list returned by caller in list context. This is useful because it means that, instead of:

    $subname = (caller)[3];

you can write the much more readable:

    $subname = caller->{sub};

None.

Perl6::Builtins requires no configuration files or environment variables.

This module uses the Contextual::Return module.

None reported.

No bugs have been reported.

Please report any bugs or feature requests to bug-perl6-builtins@rt.cpan.org, or through the web interface at http://rt.cpan.org.

Damian Conway <DCONWAY@cpan.org>

Copyright (c) 2005, Damian Conway <DCONWAY@cpan.org>. All rights reserved.

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

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