ToKeysArray

:::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 array whose values are the keys of the current ImmMap

public function toKeysArray(): varray<Tk>;

Returns

• varray<Tk> - an integer-indexed array where the values are the keys from the current ImmMap.

Examples

See Map::toKeysArray for usage examples.