“No appropriate default constructor available”–Why is the default constructor even called?

by

Your default constructor is implicitly called here:

ProxyPiece::ProxyPiece(CubeGeometry& c)
{
    cube=c;
}

You want

ProxyPiece::ProxyPiece(CubeGeometry& c)
   :cube(c)
{
    
}

Otherwise your ctor is equivalent to

ProxyPiece::ProxyPiece(CubeGeometry& c)
    :cube() //default ctor called here!
{
    cube.operator=(c); //a function call on an already initialized object
}

The thing after the colon is called a member initialization list.

Incidentally, I would take the argument as const CubeGeometry& c instead of CubeGeomety& c if I were you.

More Related Contents:

  1. Default constructor with empty brackets
  2. Does the default constructor initialize built-in types?
  3. no default constructor exists for class
  4. How do you use the non-default constructor for a member?
  5. Class inherited from class without default constructor
  6. I am trying to develop a Complex number calculator. [closed]
  7. C++ What’s the standard way to define a recursive constructor?
  8. What does the explicit keyword mean?
  9. What is this weird colon-member (” : “) syntax in the constructor?
  10. Can I call a constructor from another constructor (do constructor chaining) in C++?
  11. What is a converting constructor in C++ ? What is it for?
  12. Do built-in types have default constructors?
  13. Conversion constructor vs. conversion operator: precedence
  14. When is a private constructor not a private constructor?
  15. What is the default constructor for C++ pointer?
  16. Scope of variables in if statements
  17. Who deletes the memory allocated during a “new” operation which has exception in constructor?
  18. call to pure virtual function from base class constructor
  19. How can i use member initialization list to initialize an array?
  20. Destructors of builtin types (int, char etc..)
  21. Do I really need to implement user-provided constructor for const objects?
  22. avoiding the tedium of optional parameters
  23. Can class template constructors have a redundant template parameter list in c++20
  24. What destructors are run when the constructor throws an exception?
  25. How to add constructors/destructors to an unnamed class?
  26. Struct Constructor in C++?
  27. Initializing a union with a non-trivial constructor
  28. Constructor initialization Vs assignment
  29. C++11 anonymous union with non-trivial members
  30. No matching function for call to Class Constructor

Leave a Comment