2018-03-06 11:12 GMT+01:00 André Somers <[email protected]>: > > > On 06/03/2018 11:04, Mitch Curtis wrote: > >> https://codereview.qt-project.org/#/c/221758/ makes >> QObject::dumpObjectTree() and QObject::dumpObjectInfo() invokable so that >> they can be used from QML. I think that this could be useful to debug >> issues, but being such a widely used and important class, I'm a bit unsure >> about whether it's worth the extra overhead. Here's what Olivier has to say >> about the overhead (taken from the review comments): >> >> "The overhead here is that QObject, which is the base class of all >> objects, gets two more methods. (out of the 4 it has currently.) This means >> that QMetaObject::invoke might be slightly slower if it does not find the >> method. (But since it is currently not really optimized right now, i don't >> think we should care about this.) I don't know what that means for QML >> lookups, but probably does not matter." >> >> So, I'm wondering what others think. >> >> Would you use these from QML? >> >> Would these be better off as a helper function in the Qt singleton? E.g. >> Qt.dumpObjectTree(object) and Qt.dumpObjectInfo(object). >> _______________________________________________ >> Development mailing list >> [email protected] >> http://lists.qt-project.org/mailman/listinfo/development >> > To be honest: no, I would probably never use them from QML. Nor do I use > often from C++ either. I usually resort to external tooling such as > GammaRay that give me all these methods can give me and much, much more. > > André > > > _______________________________________________ > Development mailing list > [email protected] > http://lists.qt-project.org/mailman/listinfo/development >
I won't either, I just tried it and it gave me too low-level information that I can't really exploit afterwards. I don't see a usecase where that'll help me, maybe you do? I prefer my low-tech solution of recursively iterating the children or resources lists from QML or like André said, external tooling like GammaRay. A helper function seems like a good compromise if it's needed.
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