ConstVector::takeWhile

Returns a ConstVector containing the values of the current ConstVector up to but not including the first value that produces false when passed to the specified callback.

Description

public function takeWhile(
  (function(Tv):bool) $fn,
): ConstVector<Tv>

Returns a ConstVector containing the values of the current ConstVector up to but not including the first value that produces false when passed to the specified callback.

The returned ConstVector will always be a proper subset of the current ConstVector.

Parameters

  • (function(Tv):bool) $fn - The callback that is used to determine the stopping condition.

Return Values