Binding Loops - Video

If you haven't understood property bindings in detail, now is the time to re-watch our earlier video on the subject, which is available here: https://www.youtube.com/watch?v=2rtz9vkuxio

Then, come back here. We need to discuss something that can go wrong when using property bindings, that is, when we accidentally create a circular set of bindings (or, a "binding loop").

This video discusses the dreaded "binding loop detected" warning that comes from the QML engine. Sometimes, it's pretty clear that we have created a loop (property A depends on B, which depends on A) and we can easily fix our code. Some other times, especially when anchor layouts are involved, this is not so clear. Watch this video for an explanation of what is going wrong and how to fix it.

As a bonus suggestion: if you need to debug binding loops, try using GammaRay, the introspection tool for Qt applications developed by KDAB.

You can get GammaRay here: https://github.com/KDAB/GammaRay/wiki/Getting-GammaRay

The example code showcased in this video is available here: https://github.com/KDAB/kdabtv

00:00 Introduction
00:41 Binding Loop
05:27 Property Binding