QMap iterate foreach

Question

Is it possible to iterate through qmap when key and value is a pointer with foreach?

I always get the error: decltype cannot resolve address of overloaded function

template <typename T, typename T1>
bool func(T1* subject, QMap<T*,T1*>* map)
{
    //...
    foreach (T1* a, map->values) {

    }

thank you for helping me

Possible duplicate of https://stackoverflow.com/questions/8517853/iterating-over-a-qmap-with-for/8529237 ? — Lennart Rolland, Apr 08 '19 at 01:47

score 3 · Accepted Answer · answered Apr 24 '16 at 11:53

3

As Mike pointed out, you need to call map->values() before foreach would even work normally.

foreach operates on references, and QMap::values() returns a list of them. This would work:

foreach (T1 a, map->values()) {
    if (a == *subject)
        ...
}

answered Apr 24 '16 at 11:53

jonspaceharper

i forgot the () its working also with not dereferencing it. – Ini May 06 '16 at 15:59

1 Answers1