New JavaScript Set Methods
New JavaScript Set methods introduced in major browsers like Firefox 127 offer efficient set operations without polyfills. These methods simplify tasks like finding intersections, unions, and subsets, enhancing working with unique collections.
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New JavaScript Set methods have been introduced, available in major browser engines since Firefox 127 without the need for polyfills. These methods include intersection(), union(), difference(), symmetricDifference(), isSubsetOf(), isSupersetOf(), and isDisjointFrom(). Sets in JavaScript are unique collections where each value is stored only once, similar to arrays but with guaranteed uniqueness. Sets offer advantages like faster element checks compared to arrays, making them suitable for performance-critical scenarios. The new methods allow for various set operations like finding intersections, unions, differences, and logical comparisons between sets. These operations simplify tasks such as removing duplicates, equality checks, and comparisons. The methods also enable checking for subsets, supersets, and disjoint sets, providing Boolean results for logical checks without returning new sets. Overall, the new JavaScript Set methods enhance the functionality and efficiency of working with unique collections in JavaScript.
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11 commentsWhat optimisations allow that? As sets in javascript maintain insertion order, aren’t lookups O(n) ?
Not sure when I'll have a chance to use them but seems pretty comprehensive in covering all the basics.
Result : [-2,-7,2,6]
Ladies and Gentlemen, the lingua franca of web programming.
Do Java next!
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