how can i initialize static const int member outside class ?
class C
{
public:
C();
private:
static const int a;
static const std::string b;
};
// const int C::a = 4; // i know it
// const std::string C::b = "ba"; // this one too
I'd go with C++17 and use inline static object:
class C
{
public:
C() = default;
private:
inline static const int a = 42;
inline static const std::string b{"foo"};
};
Easiest, cleaniest, most readable.
how can i initialize static const int member outside class ? and that one is not outside of the class. Maybe it is what the OP is looking for, but then the question is asked incorrectly by the OP.
inline).
This is how to initialize static class members outside of the class:
C.cpp
#include <string>
class C {
public:
C();
private:
static const int a;
static const std::string b;
};
C::C() = default;
const int C::a = 4;
const std::string C::b = "ba";
There is no other option to initialize a static class member outside of the class, other than all the various C++ ways to do initialization as variations on this same theme.
staticandconstapplied to the same variable?const.bthat does not work?how can i initialize static const int member outside class ?besides this option is there another?You already show how to initialize them outside of the class, why do you look for another option? What do you expect from another option that you can't do with the one you show in your question? What do you not like about the one you already know?