Gen - Hhvm — ContextQMD

:::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. :::

Hack

public function gen<TStreamResponse>(
  (function(?string, ?Exception): TStreamResponse) $streamDecode,
): HH\AsyncGenerator<null, TStreamResponse, void>;

Parameters

(function(?string, ?Exception): TStreamResponse) $streamDecode

Returns

HH\AsyncGenerator<null,TStreamResponse, void>