Where to put constant strings in C++: static class members or anonymous namespaces
- by stone
I need to define some constant strings that will be used only by one class. It looks like I have three options:
Embed the strings directly into locations where they are used.
Define them as private static constant members of the class:
//A.h
class A {
private:
static const std::string f1;
static const std::string f2;
static const std::string f3;
};
//A.cpp
const std::string f1 = "filename1";
const std::string f2 = "filename2";
const std::string f3 = "filename3";
//strings are used in this file
Define them in an anonymous namespace in the cpp file:
//A.cpp
namespace {
const std::string f1 = "filename1";
const std::string f2 = "filename2";
const std::string f3 = "filename3";
}
//strings are used in this file
Given these options, which one would you recommend and why? Thanks.
