template<typename KEY, typename VAL>
Map<KEY,VAL>::MapPair<KEY,VAL> Map<KEY,VAL>::make_map_pair(KEY k, VAL v){
    return MapPair<KEY,VAL>(k,v);
 }

template<typename KEY, typename VAL>
template<typename K, typename V>
Map<KEY,VAL>::MapPair<K,V>& Map<KEY,VAL>::MapPair<K,V>::setKey(K keyp, V val){
    key = keyp;
    value = val;
 }

template <typename KEY, typename VAL>
 class Map{
 private:
    template<typename K, typename V>
    class MapPair {
    public:
        K key;
        V value;
        MapPair(){};
        MapPair(K key, V value);
        MapPair<K,V>& setKey(K key, V val);
        V& getValue();
        K getKey();
        bool operator==(MapPair<K,V> item);
    };

    List<MapPair<KEY,VAL>> pair_list_;
    MapPair<KEY,VAL> make_empty_map_pair(KEY k);
    MapPair<KEY,VAL> make_map_pair(KEY k, VAL v);
 public:
    Map(){}
    bool exists(KEY key);
    VAL& operator[](KEY key);
    VAL pop_pair(KEY key);
 };

error C2059: syntax error : ')'
error C2059: syntax error : ')'

g++ -Wall -c -std=c++11  vm.cpp
g++ vm.o -o vm