Initial commit

SourceCode/BusinessLogic/Pattern/singleton.h

@@ -0,0 +1,37 @@
+#ifndef SINGLETON_H
+#define SINGLETON_H
+
+#include "../businessLogic.h"
+
+#include <memory>
+
+BEGIN_NAMESPACE(BusinessLogic)
+BEGIN_NAMESPACE(Pattern)
+
+template <typename T>
+class Singleton {
+private:
+    static std::unique_ptr<T> m_singleton;
+
+public:
+    static const T &getInstance() {
+        if (m_singleton == nullptr) {
+            m_singleton = std::unique_ptr<T>(new T);
+        }
+        return m_singleton.operator*();
+    }
+
+    Singleton()                             = default;
+    Singleton(const Singleton &)            = delete;
+    Singleton(Singleton &&)                 = delete;
+    Singleton &operator=(const Singleton &) = delete;
+    Singleton &operator=(Singleton &&)      = delete;
+};
+
+template<typename T>
+std::unique_ptr<T> Singleton<T>::m_singleton = nullptr;
+
+END_NAMESPACE // Pattern
+END_NAMESPACE // BusinessLogic
+
+#endif // SINGLETON_H