Debugging a technology you've never seen before

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Debugging Technology Tuesday, May 14, 13

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Debugging Technology that you’ve never seen before Tuesday, May 14, 13

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I’m Liz Instructor/Director of Ops at Hackbright Co-Leader of SF Chapter of Girl Develop It! @lizTheDeveloper lizthedeveloper.com Tuesday, May 14, 13

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Often, I have to ﬁx things that I've never seen before Tuesday, May 14, 13

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Everything is a remix. So it follows the same basic principles. Tuesday, May 14, 13

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My students know I say this all the time: Shake the chain! Tuesday, May 14, 13

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Most bugs happen because of assumptions Tuesday, May 14, 13

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Break down some assumptions we make often Tuesday, May 14, 13

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1. Is our environment working? Tuesday, May 14, 13

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2. Are we writing to the right ﬁle? Is the ﬁle making it to the interpreter? Tuesday, May 14, 13

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3. Has something similar worked before? Can we do a simpler version? Tuesday, May 14, 13

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4. Is a value what we expect it to be? Tuesday, May 14, 13

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5. Is the state what we expect it to be? Tuesday, May 14, 13

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6. Have we identiﬁed ALL of the steps to get to this state? Can we test the state? Tuesday, May 14, 13

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7. Are we doing what we think we're doing? Are we acting on what we think we're acting on? Tuesday, May 14, 13

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8. Does the language even work? (this way, at least) Tuesday, May 14, 13

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9. Gremlins? Tuesday, May 14, 13

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Take it apart. Make it work in isolation. Check spelling. Tuesday, May 14, 13

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Stack Overﬂow? Google? Have other people encountered this problem? Tuesday, May 14, 13

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( An unclosed parenthesis should make you feel bad inside. Tuesday, May 14, 13

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Indentation matters It helps you spot when something is unmatched. | Sometimes the interpreter can’t see your errors. Tuesday, May 14, 13

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Sometimes, things just don't work the way you think they should. Route around. Can we go another way? Tuesday, May 14, 13