Web Reference: Learn about and revise producing robust programs with this BBC Bitesize GCSE Computer Science OCR study guide. Jan 9, 2026 · Learn about defensive design in computer science. This revision note covers techniques like input validation and error handling. May 10, 2024 · Without some form of defensive or robust design, such a program would either crash or produce very unexpected output as a result. Defensive design encourages programmers to think about the ways in which a program may be used, abused or misused when it is launched to the general public.
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