📄 command.hpp
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#ifndef _HFDP_CPP_COMMAND_UNDO_COMMAND_HPP_#define _HFDP_CPP_COMMAND_UNDO_COMMAND_HPP_#include "Undo.hpp"namespace HeadFirstDesignPatterns {namespace Command {namespace Undo {class Command { public: virtual ~Command() = 0 { } public: virtual void execute() const = 0; public: virtual void undo() const = 0;};} // namespace Undo} // namespace Command} // namespace HeadFirstDesignPatterns#endif
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