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SkipWhile

hphp/hack/manual/apis/Classes/HH/ImmSet/skipWhile.md

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:::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 an ImmSet containing the values of the current ImmSet starting after and including the first value that produces true when passed to the specified callback

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

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

Parameters

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

Returns

  • ImmSet<Tv> - An ImmSet that is a proper subset of the current ImmSet starting after the callback returns true.

Examples

See Set::skipWhile for usage examples.

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