qml can not recognize the c++ parameters with &

**stereoMatching** · 25th June 2013, 10:50

Originally Posted by anda_skoa

Do you want to change the lists in the method?
I.e. why not use const &?

Cheers,
_

I tried it, like this

Qt Code:

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QList<QString> fileProcess::unique_strs(QList<QString> const &old_data, QList<QString> const &new_data)
{        
    //awkward solution and maybe meaningless, hope that in the future this could be solved
    return set_difference_lazy(const_cast<QList<QString>&>(new_data), const_cast<QList<QString>&>(old_data));
}

QList<QString> fileProcess::unique_strs(QList<QString> const &old_data, QList<QString> const &new_data)
{        
    //awkward solution and maybe meaningless, hope that in the future this could be solved
    return set_difference_lazy(const_cast<QList<QString>&>(new_data), const_cast<QList<QString>&>(old_data));
}

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There are two problems
1 : this solution is awkward
2 : I don't know the c++ sites would accept the parameters as reference or just copy them anyway?