Add example of bridge pattern in C++

cpp/patterns/bridge/implementation.hpp

@@ -0,0 +1,38 @@
+
+#ifndef IMPLEMENTATION_HPP
+#define IMPLEMENTATION_HPP
+
+#include <string>
+
+// Base class for abstract implementation
+class Implementation {
+public:
+  explicit Implementation(std::string name_) : name(std::move(name_)) {}
+  virtual ~Implementation() = default;
+
+  inline std::string getName() const { return name;}
+
+  virtual int math(const int &a, const int &b) const = 0;
+
+private:
+  std::string name;
+};
+
+// Concrete Add implementation
+class Add : public Implementation {
+public:
+  explicit Add(std::string name_="Add") :
+      Implementation(std::move(name_)) {}
+
+  inline int math(const int &a, const int &b) const override { return a + b;}
+};
+
+// Concrete Subtract implementation
+class Subtract : public Implementation {
+public:
+  explicit Subtract(std::string name_="Subtract") :
+      Implementation(std::move(name_)) {}
+  inline int math(const int &a, const int &b) const override { return a - b;}
+};
+
+#endif // IMPLEMENTATION_HPP