Sorting a list containing QDates

[Stanfillirenfro]

Hello!

I want to sort a list containing QDates. After trying two ways, I could not overcome the probem. Could anyone help?
Here are my codes:

First, I used the function: qSort() as folowed:

qSort(list.benin(), list.end())

qSort(list.benin(), list.end())

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Form this code, the output is a list in which only day names are sorted. For example, if I have Mo (for monday), Fr (for friday) and Sat (for saturday), the output order is: Fr 22 2014, Mo 12 2014 and Sat 25 2014.

Second, with the following code, nothing is solved, the order for the imput is the same for the output.

for(int g = 0; g<list.size()-1; g++)
    {
        Date1 = list[g];
 
        for(int l = g+1; l<list.size(); l++)
        {
            Date2 = list[l];
 
            days = date1.daysTo(date2);
 
 
            if(days < 0)
            {
 
                temp = date1;
                date1 = date2;
                date2 = temp;
            }
 
 
            Date2.clear();
 
        }
 
        Date1.clear();
    }

for(int g = 0; g<list.size()-1; g++)
    {
        Date1 = list[g];
        
        for(int l = g+1; l<list.size(); l++)
        {
            Date2 = list[l];
            
            days = date1.daysTo(date2);


            if(days < 0)
            {

                temp = date1;
                date1 = date2;
                date2 = temp;
            }


            Date2.clear();

        }

        Date1.clear();
    }

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I would appreciate any help.

Many thanks in advance!

[ChrisW67]

That sounds awfully like your list is a list of strings that represent dates and not QDates at all. QDate sorts correctly.

#include <QtCore>
 
int main(int argc, char **argv) {
    QCoreApplication app(argc, argv);
 
    QList<QDate> dates;
    dates << QDate(2014, 5, 2)  // Friday
        << QDate(2014, 4, 28)   // Monday
        << QDate(2014, 4, 26);  // Saturday
 
    qDebug() << "Before" << dates;
    qSort(dates.begin(), dates.end());
    qDebug() << "After " << dates;
 
    return 0;
}
 
// Before (QDate("Fri May 2 2014") ,  QDate("Mon Apr 28 2014") ,  QDate("Sat Apr 26 2014") )
// After  (QDate("Sat Apr 26 2014") ,  QDate("Mon Apr 28 2014") ,  QDate("Fri May 2 2014") )

#include <QtCore>

int main(int argc, char **argv) {
    QCoreApplication app(argc, argv);

    QList<QDate> dates;
    dates << QDate(2014, 5, 2)  // Friday
        << QDate(2014, 4, 28)   // Monday
        << QDate(2014, 4, 26);  // Saturday

    qDebug() << "Before" << dates;
    qSort(dates.begin(), dates.end());
    qDebug() << "After " << dates;

    return 0;
}

// Before (QDate("Fri May 2 2014") ,  QDate("Mon Apr 28 2014") ,  QDate("Sat Apr 26 2014") )
// After  (QDate("Sat Apr 26 2014") ,  QDate("Mon Apr 28 2014") ,  QDate("Fri May 2 2014") )

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