[Haskell-cafe] fast Array operations: foldl, drop

Ketil Malde ketil+haskell at ii.uib.no
Fri Nov 30 02:47:50 EST 2007

Bryan O'Sullivan <bos at serpentine.com> writes:

> For higher dimensions, there are enough options in terms of
> traversal direction and what exactly e.g. a fold should fold over
> (single elements? lower-dimensional slices?) that a sensible API
> doesn't exactly leap out.

How about a 'reduce' instead of 'foldl1'?  I think that if you require
a commutative operator, the order doesn't matter (except for
efficiency and possible rounding issues, I guess).

If I haven't seen further, it is by standing in the footprints of giants

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