[Haskell-cafe] Re: PrefixMap is a Trie

Christian Maeder maeder at tzi.de
Tue Feb 28 08:33:30 EST 2006

David F.Place wrote:
> The PrefixMap datastructure implements a Prefix Tree which allows a
> key/value relationship.
> \begin{code}
> data PrefixMap k v = Node (Maybe v) (Map.Map k (PrefixMap k v))
>                      deriving (Show)
> \end{code}

You may compare your code with Keith's implemenation of a Trie.

Find attached a modified version (that I never tested, though).

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