Doubts about QtConcurrent::run and members functions

[vcp]

Hi All, Happy new year!

I've tried to use QtConcurrent::run with members functions, but I have not had success.
Then I resolved to quiz this example of documentation:

QString string = "red,blue,green";
QFuture<QStringList> future = QtConcurrent::run(string, &QString::split, QString(", "), QString::KeepEmptyParts, Qt::CaseSensitive);
 QStringList result = future.result();

QString string = "red,blue,green";
QFuture<QStringList> future = QtConcurrent::run(string, &QString::split, QString(", "), QString::KeepEmptyParts, Qt::CaseSensitive);
 QStringList result = future.result();

To copy to clipboard, switch view to plain text mode 

But the following error of compilation occurs

qreport.cpp: In constructor 'qreport::qreport()':
qreport.cpp:57: error: no matching function for call to 'run(QString&, <unresolved overloaded function type>, QString, QString::SplitBehavior, Qt::CaseSenitive);

What is happening?

Thanks in advance.

[wysota]

I think is should be "QString::split" and not "&QString:split".

[vcp]

Hi wysota,

Not, unfortunately it is not this the problem.
By the way this topic is really an a lot confused one.
You've some piece of code that use functions member in threads?
It is very difficult find some explanation about this matter.

Thanks a lot.

[Rembobo]

QString string = "red,blue,green";
    typedef QStringList (QString::*splitFunction)(const QString &sep, QString::SplitBehavior behavior, Qt::CaseSensitivity cs) const;
    splitFunction function = &QString::split;
    QFuture<QStringList> future = QtConcurrent::run(string, function, QString(","), QString::KeepEmptyParts, Qt::CaseSensitive);
    future.waitForFinished();
    QStringList sl = future.result();
    qDebug() << sl.join(" -- ");

QString string = "red,blue,green";
    typedef QStringList (QString::*splitFunction)(const QString &sep, QString::SplitBehavior behavior, Qt::CaseSensitivity cs) const;
    splitFunction function = &QString::split;
    QFuture<QStringList> future = QtConcurrent::run(string, function, QString(","), QString::KeepEmptyParts, Qt::CaseSensitive);
    future.waitForFinished();
    QStringList sl = future.result();
    qDebug() << sl.join(" -- ");

To copy to clipboard, switch view to plain text mode 

I think it happens because QString split function is overloaded and compiler cannot determine which function is right to use in template. But I could be wrong.

[vcp]

Thanks Rembobo,

I think that you are not wrong, but the example of the documentation of the Qt is. Or bad formulated.
His explanation does very sense for me.