C # Basics _ Singleton Mode

Controls the number of instances of a type-the only one

classProgram {Static voidMain (string[] args) {Test T1=test.           GetInstance (); Test T2=test.           GetInstance (); Console.WriteLine (t1. GetHashCode ()==T2.           GetHashCode ()); Test T1=NewTest (); Test T2=NewTest (); Console.WriteLine (T1. GetHashCode ()==T2.           GetHashCode ());        Console.readkey (); }    }    //single-case mode     Public classTest {PrivateTest () {} Public Static ReadOnlyTest instance =Newtest ();  Public StaticTest getinstance () {returninstance; }    }    //General Class     Public classTest {}

The first hash value is the same, indicating that it is an instance;

A second difference

C # Basics _ Singleton Mode