[Haskell-cafe] Byte Histogram

Andrew Coppin andrewcoppin at btinternet.com
Mon Feb 7 22:01:58 CET 2011

> I think haskell2010's type system is just not expressive enough to
> create interface generic enough. It's not possible to create type class
> which will work for both ByteStrings (or IntSet) and lists.

It seems that most people agree: The reason why we don't have container 
classes is that it's difficult to define them in a completely type-safe 

(The OOP people, of course, just don't bother trying. They use typecasts 

Do associated types solve this? Or are there still problems?

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