Getting data from a lot of QMaps into one QMap.

? Offline

Hello everyone,

recently I got an strange (for me) error by my project. Idea is: from a couple of QMaps I need to retrieve data and put into one QMap.

I wrote this piece of code: (getKeywords() returns a QMap<QString, unsigned>)
@
QMap<QString, unsigned> total_of_first;

for(int i = 0; i < this->first->getLogsNumber(); i++)
{
    for(QMap<QString, unsigned>::iterator   j = this->first->getPool().at(i)->getKeywords().begin();
                                            j != this->first->getPool().at(i)->getKeywords().end(); j++)
    {
        if(total_of_first.contains(j.key()))
        {
            total_of_first[ j.key() ] += j.value();
        }
        else
        {
            total_of_first.insert(j.key(), j.value()); // I found out that problem is here, but actually I don't know why
        }
    }
}

@

Could anyone give me a tip how to resolve this problem? I'll be very glad for all hints.
Best regards,

koahnig

You may want to share your error message. That would help understanding your problem.

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Ooops, sorry:P I forgot about it.

There is no message. There is "Program has unexpectly finished" if i put this line which is in "else":
@
else
{
total_of_first.insert(j.key(), j.value());
}
@

koahnig

I do not use QMap. I am more used to stl's map. In general your code is quite complicated, but seems to be correct.

I am wondering how often it loops?
Could it be that the map you are accessing is empty?

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Actually, there shouldn't be way that map could be empty. But I'll check it out;)

andre

Why don't you try your debugger, and see where your application crashes exactly?