Question

I will keep it short and just show you a code example:

class myClass
{
public:
  myClass();
  int a;
  int b;
  int c;
}

// In the myClass.cpp or whatever
myClass::myClass( )
{
 a = 0;
 b = 0;
 c = 0;
}

Okay. If I know have an instance of myClass and set some random garbage to a, b and c.

• What is the best way to reset them all to the state after the class constructor was called, so: 0, 0 and 0?

I came up with this way:

myClass emptyInstance;
myUsedInstance = emptyInstance; // Ewww.. code smell?

Or..

myUsedInstance.a = 0; myUsedInstance.c = 0; myUsedInstance.c = 0; 

• I think you know what I want, is there any better way to achieve this?

Answer 1

myUsedInstance = myClass();

C++11 is very efficient if you use this form; the move assignment operator will take care of manually cleaning each member.