HH\Pair::concat

Returns an ImmVector that is the concatenation of the values of the current Pair and the values of the provided Traversable

public function concat<Tu super mixed>(
  Traversable<mixed, Tu> $traversable,
): ImmVector<mixed, Tu>;

The values of the provided Traversable is concatenated to the end of the current Pair to produce the returned ImmVector.

Guide

This example creates a new ImmVector by concatenating a Traversable with the values in the Pair.

$p = Pair {'foo', -1.5};

$v = $p->concat(array(100, 'bar'));
var_dump($v);

Output

object(HH\ImmVector)#2 (4) {
  [0]=>
  string(3) "foo"
  [1]=>
  float(-1.5)
  [2]=>
  int(100)
  [3]=>
  string(3) "bar"
}