From: Bryan O'Sullivan <bos@serpentine.com>
Subject: Re: [Haskell-cafe] Hash table constructors return table in IO Monad. Why?
To: "michael rice" <nowgate@yahoo.com>
Cc: "Stephen Tetley" <stephen.tetley@gmail.com>, haskell-cafe@haskell.org
Date: Thursday, May 12, 2011, 6:04 PM

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

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

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