[Haskell-cafe] Re: A typeclass for Data.Map etc?

[Achim Schneider]

wren ng thornton <wren at freegeek.org> wrote:

> (b) allows 
> instances to have a fixed type for keys (like Data.Trie and
> Data.IntMap have), 
>
Can't we do some type magic to automagically select Data.Trie if the
key is a (strict) bytestring?

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