public int GetHashCode(ItemWithQuantity <TValue> obj)
{
return(_valueComparer.GetHashCode(obj.Item)
^ obj.Quantity);
}
public bool Equals(ItemWithQuantity <TValue> x, ItemWithQuantity <TValue> y)
{
return((x.Quantity == y.Quantity) &&
_valueComparer.Equals(x.Item, y.Item));
}