Learn how to implement Array.map by passing callback to prototype (JS Custom Implementation Ep-4)
Join Uncommon Geeks community to discuss with other developers: t.me/uncommongeek. As you all know JavaScript has thousands of builtIn methods which we all use on a day to day basis Ex: Array concat, Array filter, String charAt etc. It is very important for a developer to know at least how few of these methods are implemented. Asking candidate to write the custom implementations have become one of the most common interview questions these days. I will be discussing most common custom implementations in this series.
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