HH\Vector::lazy

Returns a lazy, access-elements-only-when-needed view of the current Vector

public function lazy(): HH\Rx\KeyedIterable<int, Tv>;

Normally, memory is allocated for all of the elements of the Vector. With a lazy view, memory is allocated for an element only when needed or used in a calculation like in map() or filter().

Return Values

  • HH\Rx\KeyedIterable<int, Tv> - An integer-keyed KeyedIterable representing the lazy view into the current Vector.