RailsGirls DC 2012 - Debugging

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awwaiid

High-level lightning talk covering some debugging techniques.

Technology Education

Debugging

RailsGirls DC 2012

Brock Wilcox
awwaiid@thelackthereof.org

Debugging
Troubleshooting
Problem Solving
Detective Work

Good bug reports collect these:

• What are you trying to achieve?
• Is this one issue or many?
• Is this a code issue?
• When did the issue start?
• How often does it occur?
• Is it reliably reproducable?
• Are there test-steps?
• Screenshot / Screencast?
• Is there a work-around?

puts "right now person is set to:", person

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RailsGirls DC 2012 - Debugging

1. Debugging RailsGirls DC 2012 Brock Wilcox awwaiid@thelackthereof.org

3. Debugging Troubleshooting Problem Solving Detective Work

4. Describe the problem

5. Good bug reports collect these: • What are you trying to achieve? • Is this one issue or many? • Is this a code issue? • When did the issue start? • How often does it occur? • Is it reliably reproducable? • Are there test-steps? • Screenshot / Screencast? • Is there a work-around?

6. Reproduce the Problem

7. Reduce the Problem

8. Logging (warn "Here!")

9. Debugger

10. Test Case

11. Verify Assumptions

12. puts "right now person is set to:", person

13. Break It!

14. Compiler help (Read the Error Message)

15. One modiﬁcation at a time

16. Never ﬁx again

17. THE END