skipWhile

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 an ImmVector containing the values of the current ImmVector starting after and including the first value that produces false when passed to the specified callback

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

That is, skips the continuous prefix of values in the current ImmVector for which the specified callback returns true.

The returned ImmVector will always be a subset (but not necessarily a proper subset) of the current ImmVector.

Parameters

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

Returns

• ImmVector<Tv> - An ImmVector that is a subset of the current ImmVector starting with the value for which the callback first returns false.

Examples

See Vector::skipWhile for usage examples.