QMap/QHash: not remove and not reinsert item.
I have completed QMap/QHash.
And I try remove or reinsert value whis a key, , which is already in Map.
But nothing happens.
If I try remove, function return value not equal 0, but in the debugger value remains the same.
void CListsItmes::setAttr(int row, int col, QVariant value)
int i = listItem->value(row).remove(lsNameAttr.value(col)); //try remove before inserting
//work whis BD
cond.nameAttr = "id";
cond.sign = "=";
cond.value = (*listItem).value(row).value(QString("id")).toString();
datasoure.setItemAttr(cond, getName(), lsNameAttr.value(col), value);
And what is your problem? From that dump of variable names, we cannot get anything meaningful (we do not know your code).
The best way to present those problems to a forum is to create a test case that demonstrates the erroneous behavior. This usually consists a small, complete, compilable program; most often less more than a main function and one or two small classes. And chances are good that you stumble over the cause of the problem during the process of preparing that test case :-)
Your method realy work - I began to implement my problem, and understand that - function value of QList return const T.
Change "value" to  and all is ok.
Congrats - and enjoy coding with Qt :-)