answer:In C++11, you can implement the Singleton pattern using the following steps: 1. Create a class and make its constructor, copy constructor, and assignment operator private to prevent direct instantiation and copying. 2. Provide a static member function that returns a reference to the single instance of the class. 3. Use `std::atomic` and `std::mutex` to ensure thread safety during the creation of the instance. 4. Make sure to use the double-check locking mechanism to avoid unnecessary locking. Here's an example implementation of the Singleton pattern in C++11: ```cpp #include <iostream> #include <mutex> class Singleton { private: static std::atomic<Singleton*> instance; static std::mutex mutex; Singleton() { std::cout << "Singleton instance created" << std::endl; } public: Singleton(const Singleton&) = delete; Singleton& operator=(const Singleton&) = delete; static Singleton* getInstance() { Singleton* tmpInstance = instance.load(std::memory_order_relaxed); // Acquire the instance if already created std::atomic_thread_fence(std::memory_order_acquire); // Ensure ordering before instance check if (tmpInstance == nullptr) { std::lock_guard<std::mutex> lock(mutex); // Lock if instance is still null tmpInstance = instance.load(std::memory_order_relaxed); // Check again after acquiring lock if (tmpInstance == nullptr) { tmpInstance = new Singleton(); // Create new instance if still null std::atomic_thread_fence(std::memory_order_release); // Ensure ordering before storing the instance instance.store(tmpInstance, std::memory_order_relaxed); // Store the new instance } } return tmpInstance; } void showMessage() { std::cout << "Hello from Singleton!" << std::endl; } }; std::atomic<Singleton*> Singleton::instance(nullptr); std::mutex Singleton::mutex; int main() { Singleton* singleton1 = Singleton::getInstance(); singleton1->showMessage(); Singleton* singleton2 = Singleton::getInstance(); singleton2->showMessage(); // Both singleton1 and singleton2 are pointers to the same instance if (singleton1 == singleton2) { std::cout << "Both pointers refer to the same instance" << std::endl; } return 0; } ``` In this example, the `getInstance()` function is responsible for creating and returning the single instance of the `Singleton`. The `std::atomic` type is used to guarantee atomic operations on the `instance` pointer, ensuring its safety in a multi-threaded environment. The `std::mutex` type is used to lock the critical section while creating the instance.

answer:لإيجاد اسم المستخدم الخاص بك في GitLab، يمكنك اتباع الخطوات التالية: 1. قم بتسجيل الدخول إلى حساب GitLab الخاص بك. 2. بمجرد تسجيل الدخول، يمكنك النقر على صورة الملف الشخصي الخاصة بك في الزاوية العلوية اليمنى من الصفحة. 3. ستظهر لك القائمة المنسدلة، قم بالنقر على "Settings" (الإعدادات). 4. تمرير إلى الأسفل حتى تصل إلى قسم "Username" (اسم المستخدم). 5. الانظر إلى القيمة أسفل "Username"، ستجد اسم المستخدم الخاص بك هنا. بعد معرفة اسم المستخدم الخاص بك في GitLab، يمكنك استخدامه عند التفاعل مع مستودعات GitLab الخاصة بك أو أثناء إضافة المستخدمين الآخرين إلى مشاريعك.

answer:/imagine prompt: Chinese New Year, vibrant dragon dance, intricate golden decorations, red lanterns hanging from every corner, festive atmosphere filled with laughter and music, crowded streets bustling with people in traditional costumes, scent of delicious food wafting through the air, fireworks illuminating the night sky, captured with a Canon EOS 5D Mark IV camera, 24-70mm lens, wide-angle shot showcasing the grandeur of the celebration, in a style reminiscent of street photography by Henri Cartier-Bresson. --ar 16:9 --v 5.2 /imagine prompt: Chinese New Year, majestic lion dance, vibrant colors and intricate patterns, energetic movements symbolizing good luck and fortune, performed in a traditional temple courtyard, surrounded by blooming cherry blossom trees, ancient architecture adorned with red and gold ornaments, incense filling the air with a mystical aroma, captured with a Fujifilm X-T4 camera, 56mm lens, close-up shot focusing on the lion's fierce expression, capturing the dynamic spirit of the dance, in a style reminiscent of contemporary dance photography by Lois Greenfield. --ar 9:16 --v 5.2 /imagine prompt: Chinese New Year, traditional family reunion dinner, long banquet table filled with mouthwatering dishes, generations gathered together, sharing laughter and stories, dimly lit room adorned with red lanterns and auspicious decorations, warm and cozy atmosphere, traditional music playing softly in the background, captured with a Sony A7 III camera, 35mm lens, composition showcasing the joyous interactions between family members, capturing the essence of togetherness, in a style reminiscent of documentary photography by Dorothea Lange. --ar 1:1 --v 5.2 /imagine prompt: Chinese New Year, vibrant temple fair, bustling marketplace filled with stalls selling handicrafts, traditional snacks, and festive souvenirs, colorful decorations hanging overhead, lively performances of traditional music and dance, children with beaming smiles enjoying carnival rides, energetic and joyful ambiance, captured with a Panasonic Lumix GH5 camera, 12-35mm lens, dynamic shot capturing the lively atmosphere and diversity of the fair, in a style reminiscent of vibrant street art murals by Eduardo Kobra. --ar 16:9 --v 5.2

answer:Goro, Ooyuki Daikou & Others 1972 est un groupe de rock japonais formé en 1972. "Street Fighting Man" est leur titre le plus connu, sorti la même année. La chanson reflète l'esprit de contestation et de lutte sociale qui animait la jeunesse japonaise à l'époque, face au système établi.