instance

问题 Is it possible to achieve the following code? I know it doesn\'t work, but I\'m wondering if there is a workaround? Type k = typeof(double); List<k> lst = new List<k>(); 回答1: Yes, there is: var genericListType = typeof(List<>); var specificListType = genericListType.MakeGenericType(typeof(double)); var list = Activator.CreateInstance(specificListType); 回答2: A cleaner way might be to use a generic method. Do something like this: static void AddType<T>() where T : DataObject { Indexes.Add

问题 What is a class, an object and an instance in Java? 回答1: Java (and any other programming language) is modeled in terms of types and values . At the theoretical level, a value is a representation for some quantum of information, and a type is a set of values. When we say value X is an instance of type Y, we are simply saying that X is a member of the set of values that is the type Y. So that's what the term "instance" really means: it describes a relationship not a thing. The type system of