reduceLeftOption method

Option<A> reduceLeftOption(
  1. Function2<A, A, A> op
)

Returns a summary values of all elements of this collection by applying f to each element, moving left to right.

If this collection is empty, None will be returned.

Implementation

Option<A> reduceLeftOption(Function2<A, A, A> op) => switch (knownSize) {
      0 => none(),
      _ => _reduceOptionIterator(iterator, op),
    };