/ 
Hash-DefaultValue-0.007
River stage zero No dependents
/ Hash::Missing

NAME

Hash::Missing - a hash that warns when retrieving non-existent keys

SYNOPSIS

use 5.010;
use Hash::Missing;

tie my %hash, 'Hash::Missing';
my $foo = $hash{foo};  # warns

DESCRIPTION

This is a trivial subclass of Hash::DefaultValue. The example in the SYNOPSIS could be written:

use 5.010;
use Hash::DefaultValue;

tie my %hash, 'Hash::DefaultValue', sub {
   carp "missing hash key: $_";
   return undef;
};
my $foo = $hash{foo};  # warns

BUGS

Please report any bugs to http://rt.cpan.org/Dist/Display.html?Queue=Hash-DefaultValue.

SEE ALSO

Hash::DefaultValue.

AUTHOR

Toby Inkster <tobyink@cpan.org>.

COPYRIGHT AND LICENCE

This software is copyright (c) 2012 by Toby Inkster.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

DISCLAIMER OF WARRANTIES

THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.