#include <Core/Core.h>

using namespace Upp;

template <class K, class T>
struct UMap : VectorMap<K, T>{
	T&       Add(const K& k, const T& x)            { return value[FindAdd(k)]=x; }
	T&       AddPick(const K& k, T rval_ x)         { return value[FindAdd(k)]=pick(x); }
	T&       Add(const K& k)                        { return value[FindAdd(k)]=K(); }
};

CONSOLE_APP_MAIN
{
	UMap<int, String> map;
	String s="Hello, world!";
	
	
	map.Add(1)="Hello";
	DUMPC(map);
	// unfortunately String doens't have move assignment(xfer) operator
	// so the following downgraded to Add
	map.AddPick(1, pick(s));
	DUMPC(map);
	map.Add(1,"Unique Vector Map");
	DUMPC(map);
}

int FindAdd(const K& k)
...
x               Key to find.
h               Precomputed hash value.
Return value    Position of element or a negative value if element is not in AMap.