C++: Static variable inside a constructor, are there any drawbacks or side effects?
- by doc
What I want to do: run some prerequisite code whenever instance of the class is going to be used inside a program. This code will check for requiremts etc. and should be run only once.
I found that this can be achieved using another object as static variable inside a constructor. Here's an example for a better picture:
class Prerequisites
{
public:
Prerequisites() {
std::cout << "checking requirements of C, ";
std::cout << "registering C in dictionary, etc." << std::endl;
}
};
class C
{
public:
C() {
static Prerequisites prerequisites;
std::cout << "normal initialization of C object" << std::endl;
}
};
What bothers me is that I haven't seen similar use of static variables so far. Are there any drawbacks or side-effects or am I missing something? Or maybe there is a better solution? Any suggestions are welcome.
