尝试从向量返回对象时收到“没有可行的重载operator []错误”

Question

I am working on making a small text-based game, and am currently stuck trying to build a function that passes a string, which is the name of a weapon, and returns that weapon object from a vector. Here are the relevant functions:

//define weapons like this
Weapon* flimsyDagger = Weapon* (3, "Flimsy Dagger", 17, 4.0);

//store weapons in this vector, which stores all of the stats of each weapon
void Weapon::fillWeaponVector() {
    allWeapons.push_back(flimsyDagger);
}

//use this function to return the weapon by passing its name as it was defined (e.g. 'flimsyDagger') and return all stats
Weapon* Weapon::getWeaponStats(std::string weaponName) {
    return allWeapons[weaponName];
}

The error is occurring at the first square brace in the line return allWeapons[weaponName]; . I have looked everywhere for a solution and haven't found anything that quite fits my situation. Any suggestions?

Answer 1

You claim that you're using a vector, but nothing in the code you've posted indicates that allWeapons is in fact a vector.

If it is, you can't index a vector with a text string - indices for vectors must be integers. As @Eljay suggests, using a std::map may be more appropriate. This allows you to look up the objects you store using a non-numeric key.