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isInOut

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.

Checks if this is an inout parameter

public function isInOut(): bool;

Returns​

  • bool - TRUE if the parameter is inout, otherwise FALSE