DocumentationHackReferenceClassHH\MaptoSet

HH\Map::toSet

Returns a Set based on the values of the current Map

public function toSet(): Set<Tv>;

Returns

Set<Tv> - a Set with the current values of the current Map.

Examples

This example shows that converting a Map to a Set also removes duplicate values:

// This Map contains repetitions of the hex codes for 'red' and 'blue'
$m = Map {
  'red' => '#ff0000',
  'also red' => '#ff0000',
  'green' => '#00ff00',
  'another red' => '#ff0000',
  'blue' => '#0000ff',
  'another blue' => '#0000ff',
  'yellow' => '#ffff00',
};

$set = $m->toSet();

\var_dump($set is \HH\Set<_>);
\var_dump($set);