scanl1 -text +bytestring
scanl1 is a variant of scanl that has no starting value argument:
> scanl1 f [x1, x2, ...] == [x1, x1 `f` x2, ...]
scanl1 is a variant of scanl that has no starting value argument. This function will fuse.
> scanl1 f [x1, x2, ...] == [x1, x1 `f` x2, ...]