FoldList

FoldList[f, x, a, b, ... ] gives x, f[x, a], f[f[x, a], b], ... .

Example: FoldList[f, x, a, b, c] .

FoldList[Plus, 0, list] generates cumulative sums of the elements in list.

Example: FoldList[Plus, 0, a, b, c] .

With a length list, FoldList generates a list of length .

The head of list in FoldList[f, x, list] need not be List.

See The Mathematica Book: Section 2.2.2.

See also: Fold, NestList, ComposeList, Partition, MapIndexed.

Further Examples