implementing std::function and lambdas capturing by reference in C++17 when used with std::thread
I've hit a wall trying to I'm refactoring my project and After trying multiple solutions online, I still can't figure this out... I'm running into a question with `std::function` and lambdas in C++17. I have a lambda that captures variables by reference, which I then pass to `std::thread`. Here's a simplified version of my code: ```cpp #include <iostream> #include <thread> #include <functional> void runInThread(std::function<void()> func) { func(); } int main() { int value = 42; auto lambda = [&]() { std::cout << "Value: " << value << std::endl; }; std::thread t(runInThread, lambda); t.join(); return 0; } ``` When I run this code, I get a segmentation fault. I suspect the lambda's reference to `value` goes out of scope after `runInThread` is called, leading to undefined behavior. To debug, I tried capturing `value` by value instead, like this: ```cpp auto lambda = [value]() { std::cout << "Value: " << value << std::endl; }; ``` This seems to work fine, but I want to know if there's a better way to handle the situation where I might need to capture multiple variables or use more complex logic. I also considered using `std::shared_ptr` to manage the captured variables, but I'm unsure if that's the best approach here. Is there a recommended pattern for safely using lambdas in multithreading scenarios in C++17? Any insights would be appreciated! This is part of a larger application I'm building. Am I missing something obvious? Any suggestions would be helpful.