Transform

Stream transformations: map, filter, scanl.

filter

Keep only elements satisfying a predicate.

sfilter : (a -> bool) -> Computation (Step r a) -> Computation (Step r a)

map

Map a function over each element of a stream.

smap : (a -> b) -> Computation (Step r a) -> Computation (Step r b)

scanl

Accumulate a running fold over the stream, yielding each intermediate value.

scanl : (b -> a -> b) -> b -> Computation (Step r a) -> Computation (Step r b)