HH\ImmSet::fromKeysOf

Creates an ImmSet from the keys of the specified container

public static function fromKeysOf<Tk as arraykey>(
  ?KeyedContainer<Tk, mixed> $container,
): ImmSet<Tk>;

The keys of the container will be the values of the ImmSet.

Parameters

• ?KeyedContainer<Tk,mixed> $container - The container with the keys used to create the ImmSet.

Returns

• ImmSet<Tk> - An ImmSet built from the keys of the specified container.

Examples

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