c# constructor initializer

C ++ constructor copy constructor constructor of derived classes constructor of virtual inheritanceConstructor is a special method. It is mainly used to initialize an object when an object is created, that is, assigning an initial value to the object member variable. It i

Collection Collection type initializer (Collection initializers) Want to see a "strange" code: 1class Program 2 { 3 static void Main (string[] args) 4 { 5 var a = new Point {x = ten, y = 13}; 6 var b = new Point {x =, y = 66}; 7 8 var r1 = new Rectangle {p1 = A, p2 = b}; 9 Console.WriteLine ("R1:P1 = {0},{1}", P2 = {2},{3} ", 10 r1.p1.x, R1.p1.y, r1.p2.x, R1.P2.Y); One 12 var c = new Point {x

The C ++ compiler combines the conditions of the default constructor (the default copy constructor is the same), and the constructor copies the constructor. When a user does not define a constructor for a class, the compiler does

static struct Queueptr * Header = (struct queueptr *) malloc (sizeof (struct queueptr));Wrong in compile times: initializer element is not constant Reason: Indicates that the initialization of global and static variables must be constant expressions in C99 Modify: static struct Queueptr * Header = NULL; Header = (struct queueptr *) malloc (sizeof (struct queueptr))); Check out the other blogs and see that the following code will also report the sa

Each class has only one destructor and one assignment function, but it can have multiple constructors (one copy constructor, others called ordinary constructors). For any class A, if you do not write the above functions, the C + + compiler will automatically generate four default functions for a, for example:A (void);//Default parameterless constructorA (const aa);//Default copy

Reason for the occurrence:Because the global class does not succeed when initializing a static variable, it throws the System.NullReferenceException exception, which is the exact code:public static string connstring = system.configuration.configurationmanager.connectionstrings["Sqlconnstr"]. ConnectionString;Workaround:Add a Web. config and Interfaces_helper in WinForm in the sameThe C # WinForm program adds a reference to the static method called whe

In C + +, there are three major functions of copy control (copy constructor, assignment operator, destructor), and in C++11, move constructor is added to move assignment operator. I would venture to name them six functions. First, the constructor function

In C + +, there are three major functions of copy control (copy constructor, assignment operator, destructor), and in C++11, move constructor is added to move assignment operator. I would venture to name them six functions.First, the constructor functionC++primer said: Const

C ++ constructor amp; copy constructor amp; constructor of the derived class amp; virtual inherited Constructor Constructor is a special method. It is mainly used to initialize an object when an object is created, that is, assi

C ++ copy constructor, copy assignment operator, mobile constructor, mobile assignment operator, destructor, right value reference, reference qualifier instance, right value of Constructor13.1 copy, assign value, and destroy 13.1.1 copy constructor The first parameter of the copy c