Undefined / Uninitialized default values in a class
- by Jir
Let's suppose you have this class:
class A
{
public:
A () {}
A (double val) : m_val(val) {}
~A () {}
private:
double m_val;
};
Once I create an instance of A, how can I check if m_val has been initialized/defined?
Put it in other words, is there a way to know if m_val has been initialized/defined or not? Something along the lines of the defined operator in Python, I suppose. (But correct me if I'm wrong.)
I thought of modifying the class and the c-tors the following way:
class A
{
public:
A () : defined(false) {}
A (double val) : m_val(val), defined(true) {}
~A () {}
private:
double m_val;
bool defined;
};
How do you rate this solution? Any suggestion?
TIA,
Chris
