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  1. Qt
  2. QTBUG-22170

Grouped property bindings have big impact on creation time

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    • 64b8ce5f60d0595fcc511ca860066f2d946db8f3

      Test case:

      import QtQuick 2.0

Item {
    property int abc: properties.foo // <-- FAST (< 1ms)
    // property int def: group.foo // <-- SLOW (~400ms)

    property QtObject group: QtObject {
        id: properties
        property int foo: 0
    }
}

      Steps:

      • run via QML profiler -> creation time is some hundreds of _micro_seconds
      • comment out 'abc' & uncomment 'def' -> creation time is some hundreds of _milli_seconds

        For Gerrit Dashboard: QTBUG-22170
        # Subject Branch Project Status CR V
        7504,3 Force V8 debugger load on startup instead of on demand. master qt/qtdeclarative Status: MERGED +2 0

            glwatson Glenn Watson
            jpnurmi J-P Nurmi
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              Created:
              Updated:
              Resolved:

                There are no open Gerrit changes