How to I use the overloaded operator [] in the same class?

Question

Example

class MyMap {
    std::map<K,V> m_map;
    public:
        void myFunc( K const& a, V const& b ) {
    
        // want to use [] operator on the current object.

        // something like this->[a] = b;
        }
    
        V const& operator[]( K const& key ) const {
            //body
        }
    }

How do I access the MyMap with a given key in the function myFunc() using operator[] ?

Answer 1

You can dereference on this, e.g.

void myFunc( K const& a, V const& b ) {
    (*this)[a];
}

or call the operator[] in function-call syntax:

void myFunc( K const& a, V const& b ) {
    this->operator[](a);
}

BTW: The overloaded operator[] returns V const&, on which you can't perform assignment.