Episode 43: Debugging!

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Introduction: "Easy" Programming Problems & https://blog.svpino.com/2015/05/07/five-programming-problems-every-software-engineer-should-be-able-to-solve-in-less-than-1-hour

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News

• Nand2Tetris
• https://www.coursera.org/course/nand2tetris1
• Creating Art for Engineers
• https://www.compile.com/blog/design/creating-art-engineers/
• Google - Become a SWE
• https://www.google.com/about/careers/students/guide-to-technical-development.html
• Docker: Open platform for distributed computation
• https://www.docker.com/

Book of the Show

• Jason & Patrick: Mindhacking http://www.mindhacki.ng/

Tool of the Show

• Jason: rsync
• Patrick:  Multimeter

Debugging

• Types of bugs
• Crasher
• Hang/Slowness
• Wrong answer
• Memory/Thread leak
• Buffer Overrun
• Techniques
• Divide and Conquer
• Finding where the problem isn’t
• Logging
• Print statements
• Rolling files
• Debugger
• C/C++: GDB / LLDB
• Javascript: FireBug
• Python: pdb
• Java: jdb or JDWP (Java Debugging Wire Protocol)
• Profiling (asked for by Morten Nielsen)
• Prelude/Postlude vs Random Sampling
• C/C++: gprof
• Javascript: Firefox/Chrome profiler
• Python: Profile / cProfile
• Memory Debugging
• Valgrind
• Address Sanitizer
• Automation
• Tests
• Fuzz Testing
• Browser: Gremlins.js: https://github.com/marmelab/gremlins.js/blob/master/README.md
• iOS: https://github.com/jonathanpenn/ui-auto-monkey
• Android: http://developer.android.com/tools/help/monkey.html
• Reporting
• Crash Reporting
• Aggregated statistics
• Worst bug ever stories
• Bugs that only happen in release builds
• Bugs that only happen once per day
• Bugs where you have to do something for a long time to get it to work
• Crazy Stories
• Friend’s dad debugged ATM machines in russia by playing notes at different frequencies
• Stack unwinding by hand