Calling a constructor from another constructor

[maluk]

Will it be possible to call a contructor from another constructor in a single class?

Rome did not create a great empire by having meetings, they did it by
killing all those who opposed them.

- janvier -

 

[ArkM]

No, it's not possible. Make private member(s) with common constructing functionality then call it(s) in constructors...

 

[LF28]

Hello all,

it IS quite possible to do just that:

class B {
   public:
   B(int i) { m_I = i; }
   private:
   int m_I;
};

class A {
   public:
   A() : m_B( 0 ) // <- constructor call for aggregate 
                  //     object
   {}
   protected:
   B m_B;
};

This is called "constructor initializer list". Google for details.

Cheers,
Tobi

 

[ArkM]

LF28,
it's a trivial (and canonical using of parent class(e)constructors. No need to search Google for it: it's in any C++ book.
Original post context was (obviously explicit call[\i] (as in PHP, for example)...

 

[LF28]

oh how could I miss this? Now that I know the the secrets of constructor lists really are already published in print, I do not deem myself a genius any longer.