mutators. Names and Order of Includes Use standard order for readability and to avoid hidden dependencies: Related header, C library, C++ library, other libraries’ .h, your project’s .h. All of a project’s sense as members of a new class, especially if they access external resources or have significant dependencies. Sometimes it is useful to define a function not bound to a class instance. Such a function can

clearly state that the function is a decorator. Write unit tests for decorators. Avoid external dependencies in the decorator itself (e.g. don’t rely on files, sockets, database connections, etc.), since