ConstVector::filterWithKey

Returns a ConstVector containing the values of the current ConstVector that meet a supplied condition applied to its keys and values.

Description

public function filterWithKey(
  callable $fn,
): ConstVector<Tv>

Returns a ConstVector containing the values of the current ConstVector that meet a supplied condition applied to its keys and values.

Only keys and values that meet a certain criteria are affected by a call to filterWithKey(), while all values are affected by a call to mapWithKey().

Parameters

  • callable $fn - The callback containing the condition to apply to the ConstVector keys and values.

Return Values