HH\Vector::fromItems
Creates a Vector
from the given Traversable
, or an empty Vector
if
null
is passed
public static function fromItems(
?Traversable<Tv> $iterable,
): Vector<Tv>;
This is the static method version of the Vector::__construct()
constructor.
Parameters
?Traversable<Tv> $iterable
Returns
Vector<Tv>
- AVector
with the values from theTraversable
; or an emptyVector
if theTraversable
isnull
.
Examples
// Create a new Vector from an array
$v = Vector::fromItems(array('red', 'green', 'blue', 'yellow'));
var_dump($v);
// Create a new Vector from a Set
$v = Vector::fromItems(Set {'red', 'green', 'blue', 'yellow'});
var_dump($v);
// Create a new Vector from the values of a Map
$v = Vector::fromItems(Map {
'red' => 'red',
'green' => 'green',
'blue' => 'blue',
'yellow' => 'yellow',
});
var_dump($v);
// An empty Vector is created if null is provided
$v = Vector::fromItems(null);
var_dump($v);
object(HH\Vector)#1 (4) {
[0]=>
string(3) "red"
[1]=>
string(5) "green"
[2]=>
string(4) "blue"
[3]=>
string(6) "yellow"
}
object(HH\Vector)#3 (4) {
[0]=>
string(3) "red"
[1]=>
string(5) "green"
[2]=>
string(4) "blue"
[3]=>
string(6) "yellow"
}
object(HH\Vector)#5 (4) {
[0]=>
string(3) "red"
[1]=>
string(5) "green"
[2]=>
string(4) "blue"
[3]=>
string(6) "yellow"
}
object(HH\Vector)#6 (0) {
}