Creates a “link”, which ties a promise to one or more future objects and a callback.

Same as Link, except that the callback is called only if the future objects become ready with a non-error result. The first error result encountered among the future objects will be automatically propagated to the promise.

Parameters:¶

Callback &&callback¶

The function to be invoked.

Promise<PromiseValue> promise¶

The promise to be linked.

Futures&&... future¶

The futures to be linked.

Returns:¶

A FutureCallbackRegistration handle that can be used to remove this link.