C # anonymous class anonymous learning,

C # anonymous class anonymous learning,

Thanks http://blog.csdn.net/jjx0224/article/details/5887589

Thanks http://hi.baidu.com/guodong828/blog/item/cc53404ef40af002b3de0500.html

 

C # code on the anonymous class:

 

 

1. Using System;
2. Using System. Collections. Generic;
3. Using System. Linq;
4. Using System. Text;
6. Namespace ConsoleApplication1
7. {
8. /// <Summary>
9. /// Author: it Xiaojin
10. /// Role: Use of the anonymous type
11. /// Description: var keyword, used to indicate implicitly typed variables. When using var with the new Keyword, you can create an anonymous type.
12. /// </Summary>
13. Class Program
14. {
15. Static void Main (string [] args)
16. {
17. Var a = new {name = "it Xiaojin", age = 24}; // The anonymous type is only a class that inherits the Object and has no name. The definition of this class is inferred from the initiator, similar to an implicitly typed variable.
18. // A. name = "hh"; this is incorrect. You cannot assign a value to the attribute because name is an attribute in a and is read-only.
19. String B = a. name. ToString ();
20. Int c = a. age;
21. Console. WriteLine (B );
22. Console. WriteLine (c );
23. Console. Read ();
24. }
25. }
26. }

When using anonymous classes, you will inevitably encounter the problem of Anonymous class conversion. The code above:

public T CastAnonymous<T>(object anonymous, T anonymousType){　　return (T)anonymous;}class User{　　public string Name { get; set; }}public static void Main(){　　var u = new User{ Name = "Lucifer" };　　var a = new { a = 26, Name = u.Name, b = false };　　Print(a);}public void Print(object anonymous){　　var a = CastAnonymous(anonymous, new { a=0, Name = "", b = false });　　Console.WriteLine{"{0} - {1} - {2}", a.a, a.Name, a.b};}

In the C language, what is the symbol (->) and how to use it?

This is a symbol in the struct pointer. Write a program to explain it, for example:
# Include <stdio. h>
Struct STU // define a struct
{
Int num;
} Stu;
Int main ()
{
Struct STU * p; // defines a struct pointer.
P = stu; // p points to the struct variable stu.
Stu. num = 100; // attaches an initial value to the struct member num.
Printf ("% d", p-> num); // output the num value in stu
Return;
}
As you can see, the-> method is to reference the variable in the struct !!
Format: p-> struct member (such as p-> num)
The function is equivalent to stu. num or (* p). num.
I don't know. You don't understand, and don't understand call me. O (∩ _ ∩) O ~
Hope to adopt it.

In the C language, what is the symbol (->) and how to use it?

This is a symbol in the struct pointer. Write a program to explain it, for example:
# Include <stdio. h>
Struct STU // define a struct
{
Int num;
} Stu;
Int main ()
{
Struct STU * p; // defines a struct pointer.
P = stu; // p points to the struct variable stu.
Stu. num = 100; // attaches an initial value to the struct member num.
Printf ("% d", p-> num); // output the num value in stu
Return;
}
As you can see, the-> method is to reference the variable in the struct !!
Format: p-> struct member (such as p-> num)
The function is equivalent to stu. num or (* p). num.
I don't know. You don't understand, and don't understand call me. O (∩ _ ∩) O ~
Hope to adopt it.