HH\ImmMap::lazy

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

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

Normally, memory is allocated for all of the elements of an ImmMap. 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 ImmMap.

Examples

See [Map::lazy](</hack/reference/class/Map/lazy/#examples>) for usage examples.