Browse the latest JavaScript performance benchmarks created by the community.
flatMap vs filter map
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Define a method that takes an iterable/array and a predicate, and returns two arrays, one with passing elements and one with failed elements. This is useful where you usually use filter(), but want also want an array with the elements that failed the filter.
Define a method that takes an iterable/array and a predicate, and returns two arrays, one with passing elements and one with failed elements. This is useful where you usually use filter(), but want also want an array with the elements that failed the filter.
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Compare the new ES6 spread operator with the traditional concat() method
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