Single colon

You can use the colon to initialize a member when a method is called. It's usually used to initialize constants in the constructor.

Example:


#include

class object {
const int m_member;
public:
object(const int member);
int getMember();
};

object::object(const int member) : m_member(member) {
}

int object::getMember() {
return m_member;
}

int main(int argc, char *argv[]) {
object o(10);
std::cout << o.getMember() << std::endl;
return 0;
}