Devel::ArgNames - Figure out the names of variables passed into subroutines.
use Devel::ArgNames; sub foo { warn "foo() called with arguments: " . join(", ", map { defined() ? $_ : "<unknown>" } arg_names(@_) ); } foo($bar, $gorch, $blah[4]);
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 ;-)
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).
@_
$level
arg_names
$level == 2
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.
darcs send
Data::Dumper::Simple, DB, Devel::Caller, Devel::Caller::Perl, PadWalker.
Ran Eilam
Yuval Kogman <nothingmuch@woobling.org>
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.
To install Devel::ArgNames, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Devel::ArgNames
CPAN shell
perl -MCPAN -e shell install Devel::ArgNames
For more information on module installation, please visit the detailed CPAN module installation guide.