Function in constructor initialiser list?

Question

Heyy, I am trying to switch from initialising my variables within the constructor to using the constructor initialiser list.

So instead of writing

Class::Class(int width, int height) {
  this->width = width;
  this->height = height;
}

I am doing this:

Class::Class(int width, int height) : 
  width(width), 
  height(height) {
}

That's all working, but now my problem... Say I have the following constructor:

Class::Class(int width, int height) {
  this->width = width;
  this->height = height;
  this->state.setCurrState(this->state.stateMenu);
  this->state.setPrevState(this->state.getCurrState());
}

"state" is just an object of the class "State" which I create in my header. The functions setCurrState and setPrevState are of the type void and just set the class's private variable.

How do I convert the constructor? I know it is possible to write functions in the initialiser list, but the functions I want to add do not return anything... they are void, so I do not know how I would call them?

Class::Class(int width, int height) :
  width(width), 
  height(height) 
  // call functions here... but how?
  {
}

Thank you so much I hope you can help me <3

Answer 1

There is no additional point and advantage to call those functions in initializer list, at least in your case.

Simply call them in the constructor body.

---

Important note:

You said state is a member of Class. So in constructor's level, state is not constructed yet, then constructing it by itself is somehow meaningless:

state.setCurrState(state.stateMenu);
state.setPrevState(state.getCurrState());

Try to write a well constructor for state's class to set curr/prev to a initial states.