filter (Function)

Filters elements in an iterator based on a predicate function.

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Signature: filter(iterator: iterator, predicate: function) -> iterator

Description: Filters elements in an iterator based on a predicate function.

Parameters #

  • iterator (iterator): The iterator to filter
  • predicate (function): The predicate function that returns true for elements to keep

Returns: iterator

Example #

let evens = filter(range(1, 6), fn(x) { x % 2 == 0 })
forEach(evens, print)  // Prints: 2, 4