Iterate through struct variables

Question

I want to get an iterator to struct variable to set a particular one on runtime according to enum ID. for example -

struct {
char _char;
int _int;
char* pcha         


        

Answer 1

No, C++ doesn't support this directly.

You can however do something very similar using boost::tuple:

enum {
CHAR, //0
INT,  //1
DBL   //2
};

tuple t('b', 1, 3.14);

int i = get(t);  // or t.get()

You might also want to take a look at boost::variant.