Chaining async calls with QFuture

[hamer]

Hi,

Is it possible to chain async functions using QFuture chaining, e.g.:

auto future = QtFuture::connect(reply, &QNetworkReply::finished)
	.then([reply] {
		return reply->readAll();
	})
	.then([](const QByteArray &data)
	{
		QTimer::singleShot(1000, this, []{
			call next "then"
		});
	})
	.then()
	{
		QTimer::singleShot(1000, this, []{
			call next "then"
		});
	})
	.then()
	...

Regards,

[jsulm]

@hamer Yes. The documentation even has an example:

QFuture<int> future = ...;
    future.then([](QFuture<int> f) {
        try {
            ...
            auto result = f.result();
            ...
        } catch (QException &e) {
            // handle the exception
        }
    }).then(...);

[Pl45m4]

@hamer

Why would you emit a signal and then wait for the response? If you emit a signal, you want to notify some other object and not yourself to wait (or capture the Future) again, right?
Chaining might work (not tested nor used myself).but the way your example looks, it makes no sense

edit:

lol you just fixed that code :D

[hamer]

@Pl45m4

Yes, I updated it to make it clearer what I exactly mean.