Confirm: You can iterate through array of char pointers.

main.cpp

#include <QCoreApplication>
#include <QMap>
#include <QMapIterator>
#include <QDebug>

using StringIntMap = QMap<const char*, int>;

void addToMap(StringIntMap &map, const char* key, int value)
{
    map[key] = value;
}

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    StringIntMap goodmap;
    const char* elsewhere[] = {
        "some",
        "good",
        "fucking",
        "food"
    };

    for (auto key : elsewhere){
        goodmap[key] = 400;
    }

    addToMap(goodmap, "function1", 200);
    addToMap(goodmap, "function2", 400);

    QMapIterator<const char*, int> iter(goodmap);
    while (iter.hasNext()) {
        iter.next();
        qDebug() << iter.key() << " = " << iter.value();
    }
/* prints:

some  =  400
good  =  400
fucking  =  400
food  =  400
function1  =  200
function2  =  400

*/

    return a.exec();
}