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Debugging with Pry

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Avatar for Conrad Irwin Conrad Irwin
July 25, 2013
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Debugging with Pry

Slides from Debugging with Pry at Lumos Labs.

Avatar for Conrad Irwin

Conrad Irwin

July 25, 2013

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Transcript

  1. None

  2. From http://www.codeodor.com/images/frustrated.jpg

  3. “Beware of bugs in the above code; I have only

    proved it correct, not tried it.” — Donald Knuth

  4. From http://thecollaboratory.wikidot.com/2013-philosophy-of-thought-logic

  5. None
  6. None
  7. None

  8. Use binding.pry Easier to write. Easier to read. Can explore

    interactively. Can fix things interactively.

  9. Use binding.pry whereami $ (aka. show-source) ls edit

  10. Use binding.pry cd ? (aka. show-doc) up (and down) try-again

    (with rescue rails server) help

  11. Debugging is fun 49.9% of your time is spent debugging.

    Optimize that. Pry can help.

  12. Questions? @ConradIrwin