Question

I have a struct (could be a class) which defined in ‘h’ file:

struct my_struct {
    char * a;
    char * b;
    char * other_char;
    char * hello;
    // other 100 chars
    // new chars can be added in future
};

I use this struct in my project. So I’m getting every attribute and value of this struct and call function:

void foo(char* attribute_name, char* attribute_value) {...}

Is there any way to dynamically get attributes names and values of the struct?

I need it because struct constantly raising, and I need to add code and recompile the project.

I need something like this:

void foo(my_struct s) {

    int attributes = s.getAttrSize();

    for (int i=0; i<attributes; ++i){
      char* attribute_name = s.getAttrName[i];
      char* attribute_value = s.getAttriValue[i];
    }
}

thanks!

Answer 1

No. C++ does not have reflection, and this requirement indicates a possible poor design.

Variable names are given for convenience at the programming stage, and should not be taken as identifiers for data that exists at run-time.

However, you can create a real string->object mapping with std::map.