copyconstructible
CopyConstructible is a concept in C++ that describes types that can be copied. Specifically, a type is CopyConstructible if an object of that type can be initialized from an existing object of the same type. This initialization typically occurs through a copy constructor, which is a special member function. The compiler can automatically generate a default copy constructor for many types if they are simple enough, such as primitive types or types where all members are themselves CopyConstructible.
For user-defined types, a copy constructor can be explicitly defined. This allows for custom logic when copying
The concept of CopyConstructible is fundamental to how objects are passed by value, returned by value, and