NAME

Hash::Restricted - trait for restricting keys in hashes

SYNOPSIS

use Hash::Restricted;

my %h is restricted = a => 42, b => 666;
%h<c> = 317;  # dies

my %h is restricted<a b>;
%h<a> = 42;
%h<b> = 666;
%h<c> = 317;  # dies

DESCRIPTION

Hash::Restricted provides a is restricted trait on Maps and Hashes as an easy way to restrict which keys are going to be allowed in the Map / Hash.

If you do not specify any keys with is restricted, it will limit to the keys that were specified when the Map / Hash was initialized.

If you do specify keys, then those will be the keys that will be allowed.

AUTHOR

Elizabeth Mattijsen liz@raku.rocks

Source can be located at: https://github.com/lizmat/Hash-Restricted . Comments and Pull Requests are welcome.

COPYRIGHT AND LICENSE

This library is free software; you can redistribute it and/or modify it under the Artistic License 2.0.