With Reverse Lookup
Extends a hash to be able to look up keys by value (for bi-directional hashes).
Sample
table = {
:foo => "Foo",
:bar => "Bar",
:baz => "Baz"
}.extend(WithReverseLookup)
table[:foo] #=> "Foo"
table["Foo"] #=> :foo
License
MIT
Copyright
Copyright © 2010 Matt Todd.