[Interest] Strange problem in template class (Iterator as value type of a QHash)
Mandeep Sandhu
mandeepsandhu.chd at gmail.com
Fri Aug 23 14:43:36 CEST 2013
Hi All,
I'm writing a template class which contains a QHash. Now if I try to store
an Iterator (of a QList) as the _value_ of this Hash then it fails to
compile.
Here's the sample code:
template <typename K, typename V>
class TemplateTest
{
public:
TemplateTest()
{
QHash<K, QLinkedList<V>::iterator > h;
Q_UNUSED(h);
}
private:
K k;
V v;
};
Error:
templatetest.h:13: error: type/value mismatch at argument 2 in template
parameter list for 'template<class Key, class T> class QHash'
templatetest.h:13: error: expected a type, got 'QLinkedList<V>::iterator'
templatetest.h:13: error: invalid type in declaration before ';' token
However, if I keep the value as a QList (remove iterator) it compile fine.
Whats the problem with storing a Iterator as the value?
Thanks,
-mandeep
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