convert QString list to QList<int>

isan

I have a QString List of time like timelist[0]="18:21:03";
I want to convert it to QList< int> I use this:

QStringList timelist;
QList<int> val3;
  for (int v = 0; v <= 300 ; v++) {
 foreach(QString num, timelist[v]){
   std::cout << "\n"<<num.toInt() << endl; 
    val3.append(num.toInt());
}
  std:: cout<<"\n out"<<val3[v];
 }

 but  I get **ASSERT failure in QList<T>::operator[]: "index out of range"**

how should I define QList?

SamurayH

@isan are you trying to convert the time to seconds or whatever? Because QString("18:21:03").toInt(); will return 0.
Can you clarify what is ' converting a "18:21:03" to int'.

isan

@SamurayH this

foreach(QString num, data3[0]){
        std::cout <<num.toInt() << endl;  
  }

return:

1
8
0
2
1
0
0
3
0

no I don't want to convert time to second , I want to convert qstringlist of time(read from excel file) to qlist<int> :

QLineSeries *series = new QLineSeries();
    for(int y=0 ; y<val3.size() ; y++){
        series->append(val3[y],val1[y]);
    }

JonB

@isan

QStringList timelist;
  for (int v = 0; v <= 300 ; v++) {
 foreach(QString num, timelist[v]){

 but  I get **ASSERT failure in QList<T>::operator[]: "index out of range"**

Who knows whether there are 301 strings in timelist[]? We certainly don't.

SamurayH

Try this:

QList<int> time2Int(const QStringList& timeList)
{
   QList<int> intList;
   foreach(const QString& time, timeList)
     for(int i = 0; i < time.size(); i++)
      {
        bool isNum = false; // boolean to check whether the 'time.at(i)' is a number
        int n = QString(time.at(i)).toInt(&isNum); // your int

        if(isNum) 
            intList << n;
      }

  return intList;
}

If you want a QList<int> foreach time, the function above will return then a QList<QList<int>>, which is a list of 'int list' :

QList<QList<int>> time2Int(const QStringList& timeList)
{
   QList<QList<int>> gIntList; // Global list
   foreach(const QString& time, timeList)
   {
     QList<int> intList;
     for(int i = 0; i < time.size(); i++)
      {
        bool isNum = false; // boolean to check whether the 'time.at(i)' is a number
        int n = QString(time.at(i)).toInt(&isNum); // your int

        if(isNum)
            intList << n;
      }

     gIntList << intList;
   }

  return gIntList;
}

I hope that this is what you're looking for.

isan

@SamurayH said in convert QString list to QList<int>:

QList<QList<int>> time2Int(const QStringList& timeList)

thank you
QList<QList<int>> time2Int(const QStringList& timeList) returns the (1,8,2,1,0,3)
stringlist can not be converted to the same type (18:21:03)?
I need string list to be converted to the same type(18:21:03 )
and still I get

ASSERT failure in QList<T>::operator[]: "index out of range

J.Hilk

@isan said in convert QString list to QList<int>:

QStringList timelist;
QList<int> val3;
for (int v = 0; v <= 300 ; v++) {
foreach(QString num, timelist[v]){
std::cout << "\n"<<num.toInt() << endl;
val3.append(num.toInt());
}
std:: cout<<"\n out"<<val3[v];
}
     but  I get **ASSERT failure in QList<T>::operator[]: "index out of range"**
how should I define QList?

You have the potential to Go out of bounds at at least 2 positions.
Like @JonB said, we don‘t know if 300 is inside the Range of v.

It doesn‘t really matter anyway, because this line after the loop

std:: cout<<"\n out"<<val3[v];

Is garantied to always be out of range.

Val has 300 entries, and you‘re trying to access the 301‘s