QStringlist contains() usage

[vieraci]

Can anyone correct me here ?

QStringList list;
list << "ABC" << "123";
QString testStr = "AB"
if (list.contains(testStr))

QStringList list;
list << "ABC" << "123";
QString testStr = "AB"
if (list.contains(testStr))

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contains() ALWAYS returns false !
Also,

QRegExp rx(testStr+"*");
rx.setPatternSyntax(QRegExp::Wildcard);
if (list.indexOf(rx) != -1)

QRegExp rx(testStr+"*");
rx.setPatternSyntax(QRegExp::Wildcard);
if (list.indexOf(rx) != -1)

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ALWAYS returns -1

What am I missing ?

[^NyAw^]

Hi,

Because conatins is comparing "AB" with "ABC" and "123" and "AB" is different to "ABC" and different to "123".

Maybe you want to try something like this:

QStringList list;
list << "ABC" << "123";
bool bFound = false;
int i = 0;
while ((!bFound) && (i<list.count()))
{
  if (list.at(i).contains(QString("AB"))
    bFound = true:
  else
    i++;
}
//Here you know the index(i) of the founded string

QStringList list;
list << "ABC" << "123";
bool bFound = false;
int i = 0;
while ((!bFound) && (i<list.count()))
{
  if (list.at(i).contains(QString("AB"))
    bFound = true:
  else
    i++;
}
//Here you know the index(i) of the founded string

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This code is not tested.

[wysota]

Or a slightly faster version:

bool listContains(const QStringList &list, const QString &str){
  QStringMatcher matcher(str);
  foreach(const QString &listitem, list){
    if(matcher.indexIn(listitem)!=-1) return true;
  }
  return false;
}

bool listContains(const QStringList &list, const QString &str){
  QStringMatcher matcher(str);
  foreach(const QString &listitem, list){
    if(matcher.indexIn(listitem)!=-1) return true;
  }
  return false;
}

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[^NyAw^]

Hi,

Didn't know about QStringMatcher class. Good apointment

[vieraci]

Hi,

Didn't know about QStringMatcher class. Good apointment

Neither did I !

so, QStringList::contains() does not match partial strings huh ?

[^NyAw^]

Hi,

Please read my first reply on this post. I've explained it there.