Debugging with Pry

Slides from Debugging with Pry at Lumos Labs.

Transcript

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

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3. “Beware of bugs in the above code; I have
   only proved it correct, not tried it.”
   — Donald Knuth
   

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

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8. Use binding.pry
   Easier to write.
   Easier to read.
   Can explore interactively.
   Can fix things interactively.
   

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

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10. Use binding.pry
    cd
    ? (aka. show-doc)
    up (and down)
    try-again (with rescue rails server)
    help
    

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11. Debugging is fun
    49.9% of your time is spent debugging.
    Optimize that.
    Pry can help.
    

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12. Questions?
    @ConradIrwin
    

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