NAME

Devel::ArgNames - Figure out the names of variables passed into subroutines.

SYNOPSIS

        use Devel::ArgNames;
        sub foo {
                warn "foo() called with arguments: "
                        . join(", ", map { defined() ? $_ : "<unknown>" } arg_names(@_) );
        }
        foo($bar, $gorch, $blah[4]);

DESCRIPTION

When print-debugging code, you will often ind yourself going:

        print "\$foo is $foo, \$bar is $bar"

With this module, you can write a reusable subroutine easily:

        sub my_print_vars {
                my %vars;
                @vars{arg_names()} = @_;
                foreach my $var ( keys %vars ) {
                        warn "$var is $vars{$var}\n";
                }
        }
        my_print_vars($foo, $bar);

This module doesn't provide dumping facilities because there are too many to choose from. This is a DIY kit ;-)

EXPORTS

arg_names [ $level ]

This function will return the names associated with the variables found on @_, at the level $level. If $level is not provided "arg_names"'s caller's caller will be used ("$level == 2" in that case).

VERSION CONTROL

This module is maintained using Darcs. You can get the latest version from <http://nothingmuch.woobling.org/Devel-ArgNames/>, and use "darcs send" to commit changes.

SEE ALSO

Data::Dumper::Simple, DB, Devel::Caller, Devel::Caller::Perl, PadWalker.

AUTHORS

Ran Eilam

Yuval Kogman <nothingmuch@woobling.org>

COPYRIGHT

        Copyright (c) 2007 Yuval Kogman. All rights reserved
        This program is free software; you can redistribute
        it and/or modify it under the same terms as Perl itself.