How to Initialize Private Static Data Members in C Without Static Constructors?

Initialization of Private Static Data Members: Alternative to Static Constructors

It is common to encounter a need for private static data members in a class, similar to the Java or C# concept of static constructors. However, C does not provide an explicit mechanism for static constructors.

To address this issue, C offers an alternative approach. Instead of declaring static data members within the class, create a separate ordinary class to hold the static data. Declare a static instance of this ordinary class within the desired class.

For example:

class StaticStuff
{
    std::vector<char> letters_;

public:
    StaticStuff()
    {
        for (char c = 'a'; c <= 'z'; c++)
            letters_.push_back(c);
    }

    // Provide a method to access letters_
};

class Elsewhere
{
    static StaticStuff staticStuff; // Static instance runs once
};

By using this technique, the static data is initialized once during the program execution and can be accessed throughout the program's lifetime. This approach serves as a viable alternative to static constructors in C .

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