30 Nov
2007
30 Nov
'07
2:47 a.m.
Bryan O'Sullivan
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). -k -- If I haven't seen further, it is by standing in the footprints of giants