C++ & Qt

25 Jul 2024 00:45

and you have a choice to move it if you need to

C++ & Qt

25 Jul 2024 00:44

it is detaching, not creating new

C++ & Qt

25 Jul 2024 00:44

its just to slow things down a bit

C++ & Qt

25 Jul 2024 00:41

QHttpServerResponder* resp = new QHttpServerResponder(std::move(responder));

resp->write(td ,QString().toUtf8());

C++ & Qt

25 Jul 2024 00:39

thats why it is deleted

C++ & Qt

25 Jul 2024 00:39

if you go to http://localhost:8080 it starts an infinite download, and if you abort it the TestDevice will be deleted

C++ & Qt

21 Jul 2024 19:22

Welcome to the group, @excitedmuffin! :-)

Wanna share your story of how you started with Qt, QML or C++? Maybe some nice feature that made you stick with it.
Rules are set on the description of the group. :)

C++ & Qt

21 Jul 2024 00:08

They seem to be called format tags

C++ & Qt

21 Jul 2024 00:06

https://doc.qt.io/qt-6/qbar3dseries.html#details

C++ & Qt

20 Jul 2024 23:56

(It doesn’t have to be the same in a language either)

C++ & Qt

20 Jul 2024 23:54

right, but that's a % symbol, not a @... :))

C++ & Qt

20 Jul 2024 23:52

@xLabel will probably be replaced with the value of xLabel when the string is needed

C++ & Qt

20 Jul 2024 23:51

🤔🤔ok... but what's a placeholder?

C++ & Qt

20 Jul 2024 23:36

Hello friends, does anyone know what exactly @ means in this QML code:

itemLabelFormat: "Series 1: X:@xLabel Y:@yLabel Z:@zLabel"

C++ & Qt

20 Jul 2024 09:44

I'm really late but i assume you could play with opacity?

C++ & Qt

25 Jul 2024 00:45

(QHttpServerResponder&& responder)

this is made the way it deletes responder out of scope

C++ & Qt

25 Jul 2024 00:44

do you have to create a new responder?

C++ & Qt

25 Jul 2024 00:43

don’t use sleep, just put fixed bytesAvailable and atEnd always false

C++ & Qt

25 Jul 2024 00:41

no, it runs until you cancel the download in the web browser

C++ & Qt

25 Jul 2024 00:39

responder is deleted out of scope here

C++ & Qt

25 Jul 2024 00:37

I tested it with this:

int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);

QHttpServer server;

server.route("/", QHttpServerRequest::Method::Get, [](QHttpServerResponder&& responder)
{
TestDevice* td = new TestDevice();
responder.write(td ,QString().toUtf8());
});
server.listen(QHostAddress::Any, 8080);
return a.exec();
}

C++ & Qt

21 Jul 2024 00:11

oww, that's good to know, thanks... 'cause I actually searched about placeholders in c++ and i thought they aren't really what they meant here....

C++ & Qt

21 Jul 2024 00:07

Thank you very much 🙏🏼🙏🏼

C++ & Qt

21 Jul 2024 00:03

OK, fair enough. But here i've got an example from the Qt documentation page regarding Bars3D:

Item {
    width: 640
    height: 480

    Bars3D {
        width: parent.width
        height: parent.height

        Bar3DSeries {
            itemLabelFormat: "@colLabel, @rowLabel: @valueLabel"

            ItemModelBarDataProxy {
                itemModel: dataModel
                // Mapping model roles to bar series rows, columns, and values.
                rowRole: "year"
                columnRole: "city"
                valueRole: "expenses"
            }
        }
    }

    ListModel {
        id: dataModel
        ListElement{ year: "2012"; city: "Oulu";     expenses: "4200"; }
        ListElement{ year: "2012"; city: "Rauma";    expenses: "2100"; }
        ....
    }
}

C++ & Qt

20 Jul 2024 23:55

Yes, but that can vary in different languages.

C++ & Qt

20 Jul 2024 23:53

No, it’s used in lots of places. Like
%d in
printf(“%d”, 5)

C++ & Qt

20 Jul 2024 23:52

is that something specific to Qt or C++?

C++ & Qt

20 Jul 2024 23:42

I’m not sure, but i would guess it defines placeholders

C++ & Qt

20 Jul 2024 09:45

I’m surprised this doesn’t happen more frequently

C++ & Qt

20 Jul 2024 09:42

Let's not explain something with conspiracy when it can be perfectly explained with stupidity