fold (Function)

Reduces an iterator to a single value using an accumulator function.

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Signature: fold(iterator: iterator, initial: any, fn: function) -> any

Description: Reduces an iterator to a single value using an accumulator function.

Parameters #

  • iterator (iterator): The iterator to reduce
  • initial (any): The initial value for the accumulator
  • fn (function): The reduction function that takes (accumulator, current) and returns new accumulator

Returns: any

Example #

let sum = fold(range(1, 5), 0, fn(acc, x) { acc + x })
print(sum)  // Prints: 10