Software entities (class, modules, functions, etc.) should be open for extension, but closed for modification.- Bertrand Meyer Junior programmers create simple solutions to simple problems. Senior programmers create complex solutions to complex problems. Great programmers find simple solutions to complex problems.- Charles Connell 註1：本部落格的範例程式碼在 2015 年以前的文章中，大多是以全型空白做縮排。如需服用，請自行用文字編輯器的取代功能把全型空白取代成半型空白。 註2：本部落格的內容授權請參閱部落格底部的授權宣告。
Software entities (class, modules, functions, etc.) should be open for extension, but closed for modification.- Bertrand Meyer
Junior programmers create simple solutions to simple problems. Senior programmers create complex solutions to complex problems. Great programmers find simple solutions to complex problems.- Charles Connell
註1：本部落格的範例程式碼在 2015 年以前的文章中，大多是以全型空白做縮排。如需服用，請自行用文字編輯器的取代功能把全型空白取代成半型空白。 註2：本部落格的內容授權請參閱部落格底部的授權宣告。