Two phase Construction in C++
- by tommieb75
I have as part of assignment to look into a development kit that uses the "two-phase" construction for C++ classes:
// Include Header
class someFubar{
public:
someFubar();
bool Construction(void);
~someFubar();
private:
fooObject _fooObj;
}
In the source
// someFubar.cpp
someFubar::someFubar : _fooObj(null){ }
bool
someFubar::Construction(void){
bool rv = false;
this->_fooObj = new fooObject();
if (this->_fooObj != null) rv = true;
return rv;
}
someFubar::~someFubar(){
if (this->_fooObj != null) delete this->_fooObj;
}
Why would this "two-phase" be used and what benefits are there? Why not just instantiate the object initialization within the actual constructor?
