Creating variable name in Qt by a for loop and finding numbers in a QString object

[ChrisW67]

QString name[15];
for ( int i = 0; i < 10; ++i) 
  name[i] = QString("name %1").arg(i);

QString name[15];
for ( int i = 0; i < 10; ++i) 
  name[i] = QString("name %1").arg(i);

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You should consider a QStringList instead of a C array.

QString::contains() with QRegExp()

[Alex22]

QString name[15];
for ( int i = 0; i < 10; ++i) 
  name[i] = QString("name %1").arg(i);

QString name[15];
for ( int i = 0; i < 10; ++i) 
  name[i] = QString("name %1").arg(i);

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You should consider a QStringList instead of a C array.

QString::contains() with QRegExp()

Realy thanks, ChrisW67
For what must I consider QStringList? QString is not good class for this target?
I need if str has any number, return that numbers, not true or false. QString::contains() with QRegExp() returns true or false. Is there any function for QString or must write it myself?

[ChrisW67]

A QStringList might be a good alternative to a fixed length array of strings.

If you want the captured string(s) then just use QRegExp to capture the matches. There is a useful example in the docs.

[Alex22]

A QStringList might be a good alternative to a fixed length array of strings.

If you want the captured string(s) then just use QRegExp to capture the matches. There is a useful example in the docs.

Realy nice!!! this example is exactly that i want!

QRegExp rx("(\\d+)");
QString str = "Offsets: 12 14 99 231 7";
QStringList list;
int pos = 0;
 
while ((pos = rx.indexIn(str, pos)) != -1) {
    list << rx.cap(1);
    pos += rx.matchedLength();
}
// list: ["12", "14", "99", "231", "7"]

QRegExp rx("(\\d+)");
QString str = "Offsets: 12 14 99 231 7";
QStringList list;
int pos = 0;

while ((pos = rx.indexIn(str, pos)) != -1) {
    list << rx.cap(1);
    pos += rx.matchedLength();
}
// list: ["12", "14", "99", "231", "7"]

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so many thanks ChrisW67!!!

[anda_skoa]

If you are on Qt5 you might want to use the new QRegularExpression class instead of QRegExp, to make your code more future proof

Cheers,
_