Debugging with Pry

July 25, 2013

100

Debugging with Pry

Slides from Debugging with Pry at Lumos Labs.

Conrad Irwin

July 25, 2013

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Transcript

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From http://www.codeodor.com/images/frustrated.jpg
“Beware of bugs in the above code; I have only
proved it correct, not tried it.” — Donald Knuth
From http://thecollaboratory.wikidot.com/2013-philosophy-of-thought-logic
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Use binding.pry Easier to write. Easier to read. Can explore
interactively. Can ﬁx things interactively.
Use binding.pry whereami $ (aka. show-source) ls edit
Use binding.pry cd ? (aka. show-doc) up (and down) try-again
(with rescue rails server) help
Debugging is fun 49.9% of your time is spent debugging.
Optimize that. Pry can help.
Questions? @ConradIrwin