HH\KeyedIterable::takeWhile

Returns a KeyedIterable containing the values of the current KeyedIterable 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,
): KeyedIterable<Tk, Tv>;

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

Parameters

  • $fn - The callback that is used to determine the stopping condition.

Return Values