Task: Implement Thread-Safe Singleton in C++11 Without Mutex
Task: Implement Thread-Safe Singleton in C++11 Without Mutex: a task in Terminal-Lego-15k (Harbor dataset). Implement a thread-safe, lazy-initialized singleton pattern in C++11 without using <mutex .
The task
Implement a thread-safe, lazy-initialized singleton pattern in C++11 **without using `<mutex>`**.
Part of PrimeIntellect/Terminal-Lego-15k.