[Haskell-cafe] Hash table constructors return table in IO Monad. Why?

[Bryan O'Sullivan]

On Thu, May 12, 2011 at 12:59 PM, michael rice <nowgate at yahoo.com> wrote:

>
> HashTable doesn't do it. Neither does Map. Was I dreaming?
>

multiInsert k v m = insertWith' (++) k [v] m
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