Details
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Bug
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Resolution: Fixed
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P2: Important
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6.5.0 RC
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None
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653a6ff82a6321a7f41d84ab3754ab5d10ed1d5a
Description
There seems to be no way (besides using var) to pass a list<string> to a QStringList, currently:
Window {
property list<string> someList: ["foo", "bar"]
Component.onCompleted: {
Foo.names = someList;
}
}
and
class Foo : public QObject { Q_OBJECT QML_ELEMENT QML_SINGLETON Q_PROPERTY(QStringList names READ names WRITE setNames NOTIFY namesChanged FINAL) public: explicit Foo(QObject* parent = nullptr) : QObject(parent) {} QStringList names() const { return m_names; } void setNames(const QStringList& list) { m_names = list; emit namesChanged(); } signals: void namesChanged(); private: QStringList m_names; };
renders into
Warning: Main.qml:14:21: Could not compile binding for onCompleted: cannot convert from QList<QString> of (component in /var/home/prcs1076/tmp/build-andyflick-Desktop_Qt_6_5_0_GCC_64bit-Debug/Main.qml)::someList with type QString to QStringList of Foo::names with type QStringList [compiler]
Foo.names = someList;
^^^^^^^^
. Which is technically correct, of course. Using "var" says
Warning: Main.qml:11:28: Could not compile binding for someList: Cannot generate efficient code for storing an array in a non-sequence type [compiler]
property var someList: ["foo", "bar"]
^
.
So changing the API is the only way to get rid of warnings.