3 files changed, 63 insertions, 0 deletions
diff --git a/graphs/cpp/singleton/singleton.cc b/graphs/cpp/singleton/singleton.cc
new file mode 100644
index 0000000..711e702
--- /dev/null
+++ b/graphs/cpp/singleton/singleton.cc
@@ -0,0 +1,21 @@
+//
+// Created by martial.simon on 2/27/25.
+//
+
+#include "singleton.hh"
+
+#include <iostream>
+#include <string>
+
+void Logger::open_log_file(const std::string& file)
+{
+    std::cout << "LOG: Opening file " << file << "\n";
+}
+void Logger::write_to_log_file()
+{
+    std::cout << "LOG: Writing into log file ...\n";
+}
+void Logger::close_log_file()
+{
+    std::cout << "LOG: Closing log file ...\n";
+}
diff --git a/graphs/cpp/singleton/singleton.hh b/graphs/cpp/singleton/singleton.hh
new file mode 100644
index 0000000..715a85f
--- /dev/null
+++ b/graphs/cpp/singleton/singleton.hh
@@ -0,0 +1,33 @@
+//
+// Created by martial.simon on 2/27/25.
+//
+
+#pragma once
+#include <string>
+
+template <typename T>
+class Singleton
+{
+protected:
+    Singleton() = default;
+
+private:
+    Singleton(const Singleton<T>&) = delete;
+    Singleton& operator=(const Singleton<T>&) = delete;
+
+public:
+    static T& instance();
+};
+
+class Logger : public Singleton<Logger>
+{
+    Logger() = default;
+    friend class Singleton<Logger>;
+
+public:
+    void open_log_file(const std::string& file);
+    void write_to_log_file();
+    void close_log_file();
+};
+
+#include "singleton.hxx"
+\ No newline at end of file
diff --git a/graphs/cpp/singleton/singleton.hxx b/graphs/cpp/singleton/singleton.hxx
new file mode 100644
index 0000000..04a36b8
--- /dev/null
+++ b/graphs/cpp/singleton/singleton.hxx
@@ -0,0 +1,9 @@
+#pragma once
+
+#include "singleton.hh"
+template <typename T>
+T& Singleton<T>::instance()
+{
+    static T instance_;
+    return instance_;
+}
+\ No newline at end of file