SkipWhile

:::info[Note] This is a point-in-time snapshot of the API documentation from January 2026. Going forward, we will not be maintaining a public copy of these references, and recommend users to refer to the built-in signature helpers available in the Hack LSP instead for complete and up-to-date information. :::

Returns a MutableMap containing the values of the current MutableMap starting after and including the first value that produces true when passed to the specified callback

public function skipWhile(
  (function(Tv): bool) $fn,
): MutableMap<Tk, Tv>;

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

Parameters

• (function(Tv): bool) $fn - The callback used to determine the starting element for the current MutableMap.

Returns

• MutableMap<Tk,Tv> - A MutableMap that is a proper subset of the current MutableMap starting after the callback returns true.