immutable class c#

C + + methods for executing parent classesFirst, we build a project, and then we write our parent class.People.h:People.cpp :And then here's our sub-category:Main.h:Main.cpp:Well, prepare for the job well, and we'll now write our main program:At this point, the main program output is Main:hello world! ；And we want to output People:hello world in the parent class! How to do it.We only need to change the Mai

C + + friend class:Under normal circumstances, a class is not accessible to private members of another class. Just like this:#include This is an error: main.cpp|6|error: ' int a::a ' is private| In other words, A is private and B is not accessible.At this point, we are going to use the concept of the friend class.At this point, B will be able to access the privat

//A.cppclassa{ Public: intFunintx) { return(x*x+ +); } }; voidtt () {}//B.cppclassa{ Public: intFunintx); }; voidtt (); intyy () {TT (); A; returnA.fun (3); }Compile them and then link them separately:A link error was displayed because a reference to A::fun (int) could not be found in B.cpp (B.O).Change the a.cpp above to read as follows:Class a{ public: int fun (intint A:: Fun (int x) { return (x*x+); } void tt () { } Compile the a.cpp again wit

Original link: https://blog.csdn.net/skyleung/article/details/42195509 Template In earlier versions of C + +, the keyword was not typename, so class was used when the template was defined. In later versions of C + +, in order to no longer be confused with class, a new keyword TypeName is added to differentiate. For me

Original http://blog.csdn.net/ithzhang/article/details/8119286ThemeC + +C + + has been studying for years you know why when you define a class, the definition of the class is placed in the. h file, and the implementation of the class is placed in the CPP file. Why can they be linked together? You know what can be put i

View Original: Http://www.cnblogs.com/feiyuhuo/p/5793606.html#commentform1. Suppose you want to reflect a class in a DLL and not reference it (that is, an unknown type):Assembly Assembly = assembly.loadfile ("Assembly path, cannot be relative path"); Loading assemblies (EXE or DLL)Dynamic obj = assembly. CreateInstance ("The fully qualified name of the class (that is, including the namespace)"); To create a

Class template (class template) friend and common class friends, there are many differences, The main reason is that the class template contains template parameters (template parameter), which causes the friends and class templates to have many matching forms; It consists

C ++ is a simple handle class template and handle class template. #ifndef HANDLE_H#define HANDLE_H #include "Animal.h"template A simple question about C ++ class templates Let's see.Template TYPE max (TYPE x, TYPE y){Return (x. value> y. value )? X. value: y. value;}The te

(); } } public class Wing { }Javascript var Goose = function () { var wing = new Wing (); }; var Wing = function () {};DifferenceCorrelation and Dependency differences: From the point of view of the code, dependency is the parameter or return value of the method, or the variable form of the method, and the association is embodied as a property of a class