Should I call a member function in a constructor

Question

I know it's a rather a simple question and also depends on the rest of the code, but I'm more interested in the rule of thumb.

So in what cases it's appropriate to call a function inside a constructor?

What is preferable:

ClassA obj1;
obj1.memFun();

or

ClassA obj1;
//where constructor of ClassA is
ClassA::ClassA(){ memFun(); }

Answer 1

It's no harm to call a member function within your constructor. However, make sure the member function is non-virtual one, as dynamic binding mechanism starts after constructor is done. If memFun is virtual and overridden in its subclass, then calling memFun will bind to ClassA::memFun