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| Module: | List |
|---|---|
| Function: | mapAccumL |
| Type: | (a -> b -> (a,c)) -> a -> [b] -> (a,[c]) |
| Description: | mapAccumL f s l applies f to an accumulating "state" parameter s and to each element of l in turn |
| Related: | group, groupBy, inits, intersperse, mapAccumR, nub, nubBy, partition, sort, sortBy, tails, transpose |
Input: mapAccumL (\x y -> (x,x*y)) 5 [9,6,3]
Output: (5,[45,30,15])
Input: mapAccumL (\x y -> (x+y,x*y)) 5 [2,4,8]
Output: (19,[10,28,88])
Input: mapAccumL (\x y -> (x+y,y)) 5 [2,4,8]
Output: (19,[2,4,8])
Input: mapAccumL (\x y -> (y,y)) 5 [2,4,8]
Output: (8,[2,4,8])
Input: mapAccumL (\x y -> (x,x)) 5 [2,4,8]
Output: (5,[5,5,5])