HH\Set::toImmVector
Returns an immutable vector (ImmVector) with the values of the current
Set
public function toImmVector(): ImmVector<Tv>;
Returns
ImmVector<Tv>- anImmVector(integer-indexed) with the values of the currentSet.
Examples
This example shows that toImmVector returns an ImmVector containing the Set's values. Mutating the original Set doesn't affect the ImmVector.
function expects_immutable(ImmVector<string> $iv): void {
\var_dump($iv);
}
<<__EntryPoint>>
function basic_usage_main(): void {
$s = Set {'red', 'green', 'blue', 'yellow'};
// Get an immutable Vector $v of the values in Set $s
$immutable_v = $s->toImmVector();
// Add a color to the original Set $s
$s->add('purple');
expects_immutable($immutable_v);
}