HH\Vector::__construct
Creates a Vector from the given Traversable, or an empty Vector
if null is passed
public function __construct(
?Traversable<Tv> $iterable = NULL,
): void;
Parameters
?Traversable<Tv>$iterable = NULL
Returns
void
Examples
This example shows how to create a Vector from various Traversables:
// Create a new Vector from an array
$v = new Vector(varray['red', 'green', 'blue', 'yellow']);
\var_dump($v);
// Create a new Vector from a Set
$v = new Vector(Set {'red', 'green', 'blue', 'yellow'});
\var_dump($v);
// Create a new Vector from the values of a Map
$v = new Vector(Map {
'red' => 'red',
'green' => 'green',
'blue' => 'blue',
'yellow' => 'yellow',
});
\var_dump($v);
This example shows how passing null to the constructor creates an empty Vector:
// An empty Vector is created if null is provided
$v = new Vector(null);
\var_dump($v);