A Critique of C++ and Programming and Language Trends of the 1990s 3rd Edition
نویسنده
چکیده
ion is a fundamental concept in computing. Aho and Ullman say “An important part of the field [computer science] deals with how to make programming easier and software more reliable. But fundamentally, computer science is a science of abstraction -creating the right model for a problem and devising the appropriate mechanizable techniques to solve it.” [Aho 92]. They also say “Abstraction in the sense we use it often implies simplification, the replacement of a complex and detailed real-world situation by an understandable model within which we can solve the problem.” A well known example that exhibits both abstraction and precision is the London Underground map designed by Harold Beck. This is a diagrammatic map that has abstracted irrelevant details from the real London geography to result in a conveniently sized and more readable map. Yet the map precisely shows the underground stations and where passengers can change trains. Many other city transport systems have adopted the principles of Beck’s map. Using this model passengers can easily solve such problems as “How do I get from Knightsbridge to Baker Street?”
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