removing duplicate itens from QList<int>

[john_god]

Hi guys
I'm using qSort () to sort a QList<int> list.
Now I will hardcode it to remove any duplicate int's from QList.
Unless that there is some "magical" Qt function that I don't know about that does that for me

Thanks

[norobro]

Search the QList doc for "duplicates".

[john_god]

Thanks norobro

There is a
int QStringList::removeDuplicates ()
but only for QStringList
I need it for QList, it seems it's not available

[norobro]

Won't QList::toSet() do what you want?

[Lykurg]

... and QSet::toList() to regain a QList. But maybe a small function of yourown to remove duplicates is faster.

[john_god]

Thank you guys

I will check this later, but something like this should work

QSet<int> set = m_hits_list.toSet();
    m_hits_list = set.toList();
    qSort(m_hits_list.begin(),m_hits_list.end());// sort the list

QSet<int> set = m_hits_list.toSet();
    m_hits_list = set.toList();
    qSort(m_hits_list.begin(),m_hits_list.end());// sort the list

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But maybe a small function of yourown to remove duplicates is faster.

Do you think Lykurg ? I will check for performance later, but I thought Qt functions were very optimized. I would problably do it with a for() and a removeAll(), don't know if would be faster.

[jefftee]

If you need to remove duplicates, why allow the duplicates to the QList in the first place? Use QList::contains() to see if a value already exists in the list before adding it.