Write Readable Code

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Write Elegant Code

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Write Robust Code

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Write Reliable Code

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Figure 1

Image 1 of 1: ‘Illustration showing three phases of Test-Driven Development cycle: Red (failing test), Green (passing test), and Refactor (improving code)’

The Red-Green-Refactor cycle: Write a failing test (Red), implement minimal code to pass it (Green), then refine the code while keeping tests passing

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