Returns a subset of the current Pair 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,
): ImmVector<mixed>;

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


  • int $start - The starting key of the current Pair to begin the returned ImmVector.
  • int $len - The length of the returned ImmVector.



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

// Get an ImmVector of both values
\var_dump($p->slice(0, 2));

// Get an ImmVector of the first value
\var_dump($p->slice(0, 1));

// Get an ImmVector of the second value
\var_dump($p->slice(1, 1));