Using qGreater<T> with custom objects ...
How would one go about using qGreater<T> from QtAlgorithms with a custom object?
Do I have to implement a specific operator?
You need to implement the corresponding operator > for your custom object. If you are using Qt 5, you are encourage to use std::greater directly
That member is obsolete in Qt 5.4:
Anyway, you should implement your own function to compare your objects. Here you have an example:
@bool caseInsensitiveLessThan(const QString &s1, const QString &s2)
return s1.toLower() < s2.toLower();
list << "AlPha" << "beTA" << "gamma" << "DELTA";
qSort(list.begin(), list.end(), caseInsensitiveLessThan);
// list: [ "AlPha", "beTA", "DELTA", "gamma" ]
Thanks, I wanted to use a "greater than" in conjunction with a sorting algorithm; should I only use "std" style iterators?
Also, can I use the std sorting algorithm with a QVector?