Linked Questions

I know this is an often asked question, but as there are so many variants, I'd like to re-state it, and hopefully have an answer reflecting the current state. Something like Logger& g_logger() { ...

I noticed that if you initialize a static variable in C++ in code, the initialization only runs the first time you run the function. That is cool, but how is that implemented? Does it translate to ...

This question made me question a practice I had been following for years. For thread-safe initialization of function-local static const objects I protect the actual construction of the object, but ...

The following small example implements a singleton pattern that I've seen many times: #include <iostream> class SingletonTest { private: SingletonTest() {} static SingletonTest *instance; ...

I am porting a class to C++ and need to execute some initialization code before the first instance of my class is created; executing the code before main() gets control suits me. How to do it in C++?

I have the following sample C++ code: class Factory { public: static Factory& createInstance() { static Factory fac; return fac; } private: Factory() { ...

I've typically gotten used to implementing a singleton pattern in this manner because it's so easy: class MyClass { public: MyClass* GetInstance() { static MyClass ...

I have a method / function: void foo() { static const std::string strSQLQuery = "SELECT ... "; // or maybe const std::string strSQLQuery = "SELECT ... "; // some operations on strSQLQuery ...

Consider the following scenario. We have a C++ function with a static local variable: void function() { static int variable = obtain(); //blahblablah } the function needs to be called from ...

In paper http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2660.htm an algorithm is presented that does not need to hold a lock during the initialization of a local static variable but still ...

I wrote the following toy example: std::map<char, size_t> getMap(const std::string& s) { std::map<char, size_t> map; size_t i = 0; for (const char * b = s.data(), *end = b ...

I'm following this singleton pattern, why error LNK2001: unresolved external symbol in this case? my problem LOOKs similar, but my issue is not with the definition of the static instance. My problem ...

So I want to access a singleton class from multiple threads. Conceptually I'd think that calling non-const methods on this singleton instance would be not thread-safe. I've been looking online and no ...

I have a simple function to handle the parsing and hashing of the Sec-WebSocket-Key value in a C websocket program. I had the whole program working but found out I had a bunch of char* without a ...

In C++, static variables defined inside a function are thread safe by default. So, are static variables in Rust have the same thread safety property or I need to use some sync primitive?