[Haskell-cafe] Running Total or Incremental Sum as a higher order type ?

[Sven Panne]

Crypt Master wrote:
> [...] Surely this is a pattern which has been abstracted ? I feel I 
> have missed the obvious here.

There is a prelude function "scanl1" for this kind of pattern, so you could write:

    incrementalSum = scanl1 (+)

Cheers,
    S.