Calling a constructor to re-initialize object

Question

is it possible to re-initialize an object of a class using its constructor?

Answer 1

Literally? Yes, by using placement new. But first you have to destruct the previously constructed object.

SomeClass object(1, 2, 3);
...
object.~SomeClass(); // destruct
new(&object) SomeClass(4, 5, 6); // reconstruct
...
// Final destruction will be done implicitly

The value of this does not go beyond purely theoretical though. Don't do it in practice. The whole thing is ugly beyond description.