Sorting by integer in a structure contained in a QList or QVector

[leinad]

Hi,

This may be more of a C++ questions as appose to Qt but the is some overlap. I have a structure which is made up of an integer and a QString.

struct myStruct {
int seq;
QString someText;
}
I then add the structure in a QList or QVector (I guess it doesn't make a difference), like so,
QVector<myStruct> myVector;
So now I have a vector of structures and each structure has an integer and QString elements.

As I add values to the vector, the seq (integer value) may or may not be in order. I know if I have a QList<int> I can easily sort it. Is there a way that is similar to sort where I can rearrange the order of my structure entries in the vector so they are in order by integer value (seq)? I guess, I can copy the seq into a QList, sort it and then use a for loop through the vector and match the seq between the QList and QVector and rearrange that way but it seems like a complicated convoluted way of doing it.

Thanks.

[JonB]

@leinad
Sort QVector of pointers to custom objects shows just your situation. It shows you how to use std::sort() on a QVector, which is what you are expected to do. That example stores/sorts a vector of pointers to struct/class, but you can change it to work on a vector of the struct/class instead of pointers.

An older post in this forum, https://forum.qt.io/topic/47037/solved-sorting-possible-on-a-qvector-that-has-a-struct-as-elements, shows the same approach but for QVector<struct> like your case. It uses qsort() because it's old, you should use std::sort().

[leinad]

Thank you. I'll take a look