How to initialize a const field in constructor?

by

You need to do it in an initializer list:

Bar(Foo* _foo) : foo(_foo) {
}

(Note that I renamed the incoming variable to avoid confusion.)

More Related Contents:

  1. What is this weird colon-member (” : “) syntax in the constructor?
  2. What does a colon following a C++ constructor name do? [duplicate]
  3. Do I really need to implement user-provided constructor for const objects?
  4. Why does C++ not have a const constructor?
  5. Why must const members be initialized in the constructor initializer rather than in its body?
  6. How do I initialize a const data member?
  7. What is the difference between const int*, const int * const, and int const *?
  8. Default constructor with empty brackets
  9. What are the rules for calling the base class constructor?
  10. static const vs #define
  11. const vs constexpr on variables
  12. Does const mean thread-safe in C++11?
  13. How to initialize const member variable in a class?
  14. Throwing exceptions from constructors
  15. A most vexing parse error: constructor with no arguments
  16. C++0x lambda capture by value always const?
  17. Is passing a C++ object into its own constructor legal?
  18. C++: Where to initialize variables in constructor [duplicate]
  19. Is there any difference between “T” and “const T” in template parameter?
  20. Is a `=default` move constructor equivalent to a member-wise move constructor?
  21. What is the difference between a macro and a const in C++?
  22. Forwarding all constructors in C++0x
  23. What is the difference between a const reference and normal parameter?
  24. Different ways of initializing an object in c++
  25. Const correctness in C vs C++
  26. Class inherited from class without default constructor
  27. const in C vs const in C++
  28. non-const pointer argument to a const double pointer parameter
  29. Why must a std::ranges::filter_view object be non-const for querying its elements?
  30. C++ “error: passing ‘const std::map’ as ‘this’ argument of …”

Leave a Comment