Why is the copy-constructor argument const?

by

You’ve gotten answers that mention ensuring that the ctor can’t change what’s being copied — and they’re right, putting the const there does have that effect.

More important, however, is that a temporary object cannot bind to a non-const reference. The copy ctor must take a reference to a const object to be able to make copies of temporary objects.

More Related Contents:

  1. Default constructor with empty brackets
  2. Do the parentheses after the type name make a difference with new?
  3. What are the rules for calling the base class constructor?
  4. C++ virtual function from constructor [duplicate]
  5. Throwing exceptions from constructors
  6. A most vexing parse error: constructor with no arguments
  7. Is passing a C++ object into its own constructor legal?
  8. How to initialize a const field in constructor?
  9. What is the default constructor for C++ pointer?
  10. What is a non-trivial constructor in C++?
  11. Who deletes the memory allocated during a “new” operation which has exception in constructor?
  12. What is an in-place constructor in C++? [duplicate]
  13. Why is protected constructor raising an error this this code?
  14. C++: Construction and initialization order guarantees
  15. C++: Where to initialize variables in constructor [duplicate]
  16. avoiding the tedium of optional parameters
  17. Can class template constructors have a redundant template parameter list in c++20
  18. Is a `=default` move constructor equivalent to a member-wise move constructor?
  19. How to add constructors/destructors to an unnamed class?
  20. Forwarding all constructors in C++0x
  21. Struct Constructor in C++?
  22. Different ways of initializing an object in c++
  23. No matching function for call to Class Constructor
  24. Why must initializer list order match member declaration order?
  25. Class inherited from class without default constructor
  26. Conflict between copy constructor and forwarding constructor
  27. Default member values best practice
  28. Scope resolution operator being used twice
  29. Calling a constructor to re-initialize object
  30. C++ Constructor/Destructor inheritance

Leave a Comment