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The Pragmatic Programmer: your journey to mastery, 20th Anniversary Edition, 2nd Edition
book

The Pragmatic Programmer: your journey to mastery, 20th Anniversary Edition, 2nd Edition

by David Thomas, Andrew Hunt
September 2019
Intermediate to advanced
352 pages
8h 3m
English
Addison-Wesley Professional
Content preview from The Pragmatic Programmer: your journey to mastery, 20th Anniversary Edition, 2nd Edition
Topic 9
DRY—The Evils of Duplication

Giving a computer two contradictory pieces of knowledge was Captain James T. Kirk's preferred way of disabling a marauding artificial intelligence. Unfortunately, the same principle can be effective in bringing down your code.

As programmers, we collect, organize, maintain, and harness knowledge. We document knowledge in specifications, we make it come alive in running code, and we use it to provide the checks needed during testing.

Unfortunately, knowledge isn't stable. It changes—often rapidly. Your understanding of a requirement may change following a meeting with the client. The government changes a regulation and some business logic gets outdated. Tests may show that the chosen algorithm won't work. ...

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Publisher Resources

ISBN: 9780135956977