Returns a subset of the current ConstVector starting from a given key up to, but not including, the element at the provided length from the starting key

public function slice(
  int $start,
  int $len,
): ConstVector<Tv>;

$start is 0-based. $len is 1-based. So slice(0,2) would return the elements at key 0 and 1.

The returned ConstVector will always be a proper subset of this ConstVector.


  • int $start - The starting key of this Vector to begin the returned ConstVector.
  • int $len - The length of the returned ConstVector.