'Helper' functions in C++

Question

While refactoring some old code I have stripped out a number of public methods that should actually of been statics as they a) don\'t operate on any member data or call any othe

Answer 1

A case where one might use class (or struct) over namespace is when one needs a type, for example:

struct C {
  static int f() { return 33; }
};

namespace N {
  int f() { return 9; }
}

template
int foo() {
  return T::f();
}

int main() {
  int ret = foo();
//ret += foo(); // compile error: N is a namespace
  return ret;
}