HH\KeyedIterable::lazy

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

public function lazy(): KeyedIterable<Tk, Tv>;

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

Guide

• Examples

Returns

• KeyedIterable<Tk,Tv> - a KeyedIterable representing the lazy view into the current KeyedIterable.