Calling a constructor to re-initialize object

Question

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

Answer 1

I usually write the following in modern C++ :

SomeClass a;
...
a = decltype(a)();

It may be not the most effective way, as it effectively constructs another object of the same type of a and assigns it to a, but it works in most cases, you don't have to remember the type of a, and it adapts if the type changes.