[Haskell-cafe] Re: Numeric type classes

On Wed, 13 Sep 2006 ajb@spamcop.net wrote:

G'day all.

Quoting Henning Thielemann :

...

... which got the same name, too, namely 'foldl'.

You mean foldr. The place of foldl is a bit tricky, but in this case it requires that the monoid be Abelian.

A monoid operation is associative, isn't it?