containers/ assignment operator

This is a discussion on containers/ assignment operator within the C++ Programming forums, part of the General Programming Boards category; My docs on the vector class says it's compatible with classes that have copy contructers and assignment operators, how would ...

  1. #1
    Registered User Kirdra's Avatar
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    containers/ assignment operator

    My docs on the vector class says it's compatible with classes that have copy contructers and assignment operators, how would I define these operaters, I think I know how to do the copy constructer but not the assignment one...

    Something to do with not mixing the pointers up, I know. Just not familar with operator overloading. thx.

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    Both methods are similar. A copy constructor is a construtor that takes a reference to a class of the same type and simply copies the data from the argument to the local class. Most compilers will do a memberwise copy by default, but this is bad if you use anything but the basic types (int, char...)

    An assignment operator does the same thing, only its done on a class that has already been constructed.

    Code:
    class myClass {
    public:
      int data;
    
      myClass() : data(0) {}
      myClass(myClass &copy) {data = copy.data;}
    
      myClass& operator=(myClass &rhs) {data = rhs.data; return *this;}
    };
    Its a simple example, but I hope it helps.

    PK

  3. #3
    Registered User Kirdra's Avatar
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    That's great.

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