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

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

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.

Returns

• ConstVector<Tv> - A ConstVector that is a proper subset of the current ConstVector up until the callback returns false.