In order to use static data members in C++, I have currently something like that :
// HEADER FILE .h
class MyClass {
private :
static double myvariable;
};
// CPP FILE .cpp
double MyClass::myvariable = 0;
But if now I have :
// HEADER FILE .h
class MyClass {
private :
static double myarray[1000];
};
How can I initialize it ?
Thanks
The same as you initialize ordinary arrays:
double MyClass::myarray[1000] = { 1.1, 2.2, 3.3 };
Missing elements will be set to zero.
vector, you could initialize it with an intelligent, value-generating iterator, but since you chose to go for a dumb array, that's a limitation. I think C++11 initializer lists might help, but only if you have an efficient way of constructing the initializer list with your complex values...std::array or std::vector -- there's no limit to how much one can fix someone's ideas, but to answer a question one has to stay in scope some times. C++11 adds initializer lists that let you initialize member arrays in a constructor, but as far as this static array is concerned, there's really not much else you can say. Do take it up with the OP if you think his design is wrong, but what has this to do with this answer?Try this,
class MyClass {
private :
static double myarray[1000];
};
double MyClass::myarray[]={11,22};
You could add a non-pod static member that would initialize myvariable from it's constructor
This is a little like 'RIAA-by-proxy' if you will.
Beware of the Static Initialization Fiasco
Why not do this - change the array to a vector. Use another class that is a superclass of vector and do the initialisation of the array (vector) in its constructor. You are then able to make it as complex as you require and also just treat it as an array>
