Monthly Archive: February 2016

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Implement zip in javascript

Reducing an array to a single value When we need to combine two arrays by progressively taking an item from each and combining the pair. If you visualize a zipper, where each side is...

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Implement concatAll in javascript

Querying Nested Arrays To work with tree data structure we need to flatten them. We will be solving a problem using Array.prototype.forEach(). We will define Array.prototype.concatAll() using Array.prototype.forEach(). We will solve the same problem...

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Implement filter in javascript

Predicating Arrays Filtering also key method for manipulating collections. We iterate over the array and add an item to the new array if it passes the test. We will be solving a problem using...

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