Debugging Checklist

The classic \"print-statement-debugging\" techniques may work for simpler cases, but quickly get unmanageable. The checklist below is an effective way to find and fix bugs.

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Observe the bug
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\"What makes me think there is a problem?\"
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Create a reproducible input
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\"How can I reliably reproduce this problem?\"
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Narrow the search space
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\"How can I narrow down to the code that could cause this problem?\"
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Analyze
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\"What information can I gather from this identified code?\"
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Devise and run experiments
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\"How can I check my hypotheses about the issue?\"
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Modify code to squash the bug
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\"How can I fix the issue, and confirm that the fix works?\"
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Additional Tips

Change only one variable at a time while experimenting.
Good style means easier debugging.
Thorough testing helps uncover bugs.

\n View Source\n

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Debugging Checklist

Observe the bug

Create a reproducible input

Narrow the search space

Analyze

Devise and run experiments

Modify code to squash the bug

Additional Tips