HH\Set::clear

Remove all the elements from the current Set

public function clear(): Set<Tv>;

Future changes made to the current Set ARE reflected in the returned Set, and vice-versa.

Returns

• Set<Tv> - Returns itself.

Examples

$s = Set {'red', 'green', 'blue', 'yellow'};
var_dump($s);

$s->clear();
var_dump($s);

object(HH\Set)#1 (4) {
  string(3) "red"
  string(5) "green"
  string(4) "blue"
  string(6) "yellow"
}
object(HH\Set)#1 (0) {
}