template <class T>
BinaryOp<PVector::ConstIterator, T, Add> operator +(const PVector& v1, const T& v2){
	return MakeAdd(v1.begin(), v2);
}

template <class T>
BinaryOp<T, PVector::ConstIterator, Add> operator +(const T& v1, const PVector& v2){
	return MakeAdd(v1, v2.begin());
}

BinaryOp<PVector::ConstIterator, PVector::ConstIterator, Add> operator +(const PVector& v1, const PVector& v2){
	return MakeAdd(v1.begin(), v2.begin());
}

BinaryOp<PVector::ConstIterator, PVector::ConstIterator, Sub> operator - (const PVector& v1, const PVector& v2){
	return MakeSub(v1.begin(), v2.begin());
}

//Surcharge de l'opérateur *
BinaryOp<PVector::ConstIterator, UnaryOp<double, Const>, Mult> operator * (const PVector& v1, double d){
	return MakeMult(v1.begin(), MakeConst(d));
}

//Surcharge de l’opérateur /
BinaryOp<PVector::ConstIterator, UnaryOp<double, Const>, Div> operator / (const PVector& v1, double d){
	return MakeDiv(v1.begin(), MakeConst(d));
}

// Surcharge de l'opérateur - (pour -PVector)
UnaryOp<PVector::ConstIterator, Minus> operator - (const PVector& v1){
	return MakeMinus(v1.begin());
}