Data.HashTable and duplicate keys
ger at informatik.uni-bremen.de
Tue Sep 28 07:48:54 EDT 2004
Einar wrote (snipped):
> I recently noticed that Data.HashTable silently
> accepts duplicate keys and keeps all the values.
> This is very counterintuitive from the interface
> and makes updating a hashtable quite tedious
> (lookup + delete + insert).
Gosh, I'm glad *someone* told me of this bizarre behaviour.
Why on earth hash tables should mimic association lists of
all things is a mystery to me. (Should GHC also insert
delay loops to simulate their poor performance?)
Sigh, off I go to fix my code. Just as well I only use
hash tables in one place.
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