QList::indexOf() ?

[cyberduck]

Hello,

to find the index of a Widget from a QList, i do this:

QList<QPair<MyWidget*, int> >  list
 
    int i
    for(i=0;i<list.size();i++){
        if( list[i].first == mywidget )
            break;
    }

QList<QPair<MyWidget*, int> >  list

    int i
    for(i=0;i<list.size();i++){
        if( list[i].first == mywidget )
            break;
    }

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Is it possible to use indexOf() like this?

list.indexOf(T.first)

list.indexOf(T.first)

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Thanks in advance

[wysota]

No, you can't do it this way. But you can improve (as in 'speed up') your search by using a hash instead of a list:

QHash<QWidget*, int> hash;
//...
QWidget *mywidget;
int value = hash.value(mywidget);

QHash<QWidget*, int> hash;
//...
QWidget *mywidget;
int value = hash.value(mywidget);

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[alireza.mirian]

list.indexOf() accepts a argument of your list type, which is QPair in your example. and if a QPair in list is '==' with the passed Qpair, it will return it's index.
T seems to be undefined according to your code and "list.indexOf(T.first);" contains error because of that. (if you mean the Template type of the list, it's quite wrong)

[Spitfire]

You could also use QMap.

[cyberduck]

Thanks, QHash and QMap is much better to do that!