3 ms·

One good alternative to ctor+init() is a static factory method with a private ctor. It's just as simple as in C.

• fluffything 7y ago
  Not sure what a "factory method" is, but struct Foo { private: int a = 0, b = 0; Foo() = default; Foo(int a, int b): a(a), b(b) {} public: static Foo init_zeroed() { return Foo{}; } static Foo init_ones() { return Foo{1, 1}; } }; will do. You can add as many static methods acting as "named constructors" as you want.
  • stickfigure 7y ago
    ...and now you know what a "factory method" is.
    • Koshkin 7y ago
      Almost. One of the biggest advantages of a class factory is that it can return a pointer to an interface rather than a concrete class.
      • inetknght 7y ago
        Yes but that doesn't meaningfully change what a "factory" is: a factory returns an already-constructed object or smart-pointer-to-that-object you can work with. Whether or not that object is concrete or an interface to a hidden implementation is less important IMO.