function lastx()

in src/c/select.php [218:242]

• 23 lines of code
• 4 McCabe index (conditional complexity)

function lastx<T>(
  Traversable<T> $traversable,
)[]: T {
  if ($traversable is Container<_>) {
    $last_value = _Private\Native\last($traversable);
    if ($last_value is nonnull) {
      return $last_value;
    }
    invariant(
      !is_empty($traversable),
      '%s: Expected at least one element.',
      __FUNCTION__,
    );
    /* HH_FIXME[4110] invariant above implies this is T */
    return $last_value;
  }
  $value = null;
  $did_iterate = false;
  foreach ($traversable as $value) {
    $did_iterate = true;
  }
  invariant($did_iterate, '%s: Expected at least one element.', __FUNCTION__);
  /* HH_FIXME[4110] invariant above implies this is T */
  return $value;
}