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    Very nice summary. I wish candidates read it before taking code assignment/being interviewed. We are hiring right now and for some people “Array extras” are still uncharted territory.

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      I’ve worked with a lot of great JS developers who still use MDN / google to look up basic array methods, maybe this isn’t the best way to evaluate candidates?

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        Hell, I worked on a JS engine for most of a decade, and was literally on TC39, and still have to check the docs for argument orders and what not.