Reducing QListView to the common elements in the list?

Question

Is there a methode or simple approach to do this?

Given a list with:

D A B A B C D D

I want the list to be reduced to:

A B C D

Otherwise I will just write something to process in the background.

Answer 1

It depends on how is your data storen and passed to the view. Generally, the simpliest way to remove duplicates from a list of element is converting it to set:

QStringList values;
//...
QSet<QString> set = values.toSet();

After that you can convert the set back to list using toList or iterate over a set using usual foreach loop. Note that QSet is unordered. If you want to sort your strings, convert the set to list and sort the list using qSort.