[Haskell-cafe] Re: Bi-directional Maps
Albert Y. C. Lai
trebla at vex.net
Tue Aug 21 16:32:41 EDT 2007
> Hugh Perkins wrote:
>> Arguably there are two possible implementations, one that enforces
>> one-to-one mapping, and one which allows multiple values, in either
> Terminology reminder :)
> - the latter is called "(binary) relation"
> - the former would be a "bijection"
Following a great tradition,
"That's just semantics."
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