ConstSet::takeWhile

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

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

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

Parameters

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

Returns

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