24 May
2011
24 May
'11
3:18 p.m.
Evan Laforge schrieb:
I dunno, I hardly ever use length and when I do it's always lists I know are very short. And it tends to be shortcuts like 'drop (length prefix) word' because I'm too lazy to write a special function.
Since it happens so often I have written such functions: http://hackage.haskell.org/packages/archive/utility-ht/0.0.7/doc/html/Data-L...
On the catMaybes thing, I have a function 'mapMaybe = Maybe.catMaybes . map'. I turns out I only ever used catMaybes after mapping a Maybe function, so I hardly ever use catMaybes anymore. I suppose it should have been maybeMap for consistency with concatMap.
mapMaybe is part of Data.Maybe.