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CandiedOrange names the most important single tool for understanding code: the code itself. You can't always trust documentation, and anyway the docs are aimed at people who just want to use the public methods of the frameworks, so you have to run the code, inspect the values of variables or the return values of functions, and use debugging techniques to ...


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Use tests. I read code with my fingers. Print out code and hand it to me and I go cross eyed. Sure you can doodle on it, highlight it, annotate it, and draw cartoons in the margins but mostly, I run the code. I test. Oh sure I can tell you what the odd hello world does. Maybe decode a 3 level deep if else maze. But read enough code and it bleeds ...



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