QStringList

[jaca]

I wanted to copy a QStringList to another QStringList but only taking the odd positions.

QStringList pa[1] = QStringList im[0];
QStringList pa[3] = QStringList im[1];
QStringList pa[5] = QStringList im[2];
.
.
.

QStringList pa[1] = QStringList im[0];
QStringList pa[3] = QStringList im[1];
QStringList pa[5] = QStringList im[2];
.
.
.

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Someone has idea?
Thanks.

[^NyAw^]

Hi,

Use something similar to this:

int i=0;
int j=1;
while (i<im.count())
{
  pa[j] = im[i];
  i++;
  j +=2;
}

int i=0;
int j=1;
while (i<im.count())
{
  pa[j] = im[i];
  i++;
  j +=2;
}

To copy to clipboard, switch view to plain text mode 

Not tested

[jaca]

Hi,

Use something similar to this:

int i=0;
int j=1;
while (i<im.count())
{
  pa[j] = im[i];
  i++;
  j +=2;
}

int i=0;
int j=1;
while (i<im.count())
{
  pa[j] = im[i];
  i++;
  j +=2;
}

To copy to clipboard, switch view to plain text mode 

Not tested

tried in many ways, but always occurs Segmentation fault.

while (i < pa.count())
      {
        im[i] = pa[j];
        i++;
        j +=2;
      }

while (i < pa.count())
      {
        im[i] = pa[j];
        i++;
        j +=2;
      }

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there is no way in Qt?

[wysota]

You have to resize the list or use append() to insert items and the indexes of the list have to be a sequence. If you want only odd index numbers, use QMap.

int index = 1;
QStringList inlist;
QMap<int, QString> out;
foreach(const QString &str, inlist){
  out[index] = str;
  index+=2;
}

int index = 1;
QStringList inlist;
QMap<int, QString> out;
foreach(const QString &str, inlist){
  out[index] = str;
  index+=2;
}

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[jaca]

You have to resize the list or use append() to insert items and the indexes of the list have to be a sequence. If you want only odd index numbers, use QMap.

int index = 1;
QStringList inlist;
QMap<int, QString> out;
foreach(const QString &str, inlist){
  out[index] = str;
  index+=2;
}

int index = 1;
QStringList inlist;
QMap<int, QString> out;
foreach(const QString &str, inlist){
  out[index] = str;
  index+=2;
}

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tried this code:

QMap<int, QString>::const_iterator i = out.constBegin();
 while (i != out.constEnd()) {
     cout << i.key() << ": " << i.value() << endl;
     ++i;
 }

QMap<int, QString>::const_iterator i = out.constBegin();
 while (i != out.constEnd()) {
     cout << i.key() << ": " << i.value() << endl;
     ++i;
 }

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Only I could not show values. As I see the values of QMap?
Thanks.

[wysota]

Do you have console support enabled? I suggest using QMessageBox instead of cout to be sure.