fold (Function)
Signature: fold(iterator: Iterator<t0>, initial: t1, fn: (t1, t0) -> t1) -> t1
Description: Reduces an iterator to a single value by repeatedly applying a function.
Parameters
- iterator (Iterator
): The iterator to reduce - initial (t1): The initial value for the accumulator
- fn ((t1, t0) -> t1): The reduction function that takes (accumulator, current) and returns new accumulator
Returns: t1
Example
range(1, 5) |> fold(0, add) // sum: 0+1+2+3+4 = 10range (1, 5) |> fold (0, add) // sum: 0+1+2+3+4 = 10