tomtom tomtom - 2 days ago 6
C++ Question

partial function template specialization

Hi I think I'm missing something with this technique. Tried to follow examples but the following gives me an error:

invalid use of incomplete type ‘class Citizen<T, minAge, maxAge, true>’


template <typename T, T minAge, T maxAge, bool isarmed>
class Citizen {
public:

Citizen(T health, T age);
Citizen(T health, T age, T attackPower);
T getAttackPower();

private:
T _health;
T _age;
T _attackPower;
};

template <typename T, T minAge, T maxAge>
T Citizen<T, minAge, maxAge, true>::getAttackPower() {
return _attackPower;
}

Answer

You cannot use partial template specialization for a single member function - need to specialize the entire class instead (however, full template specialization would be okay).

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