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lodash uniq vs set objects
(version: 0)
Comparing performance of:
Set vs Array
Created:
4 years ago
by:
Guest
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HTML Preparation code:
<script src='https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js'></script>
Tests:
Set
var l = new Set([{CommitteeId:1},{CommitteeId:1},{CommitteeId:1},{CommitteeId:1},{CommitteeId:2}]); return l;
Array
var l = [{CommitteeId:1},{CommitteeId:1},{CommitteeId:1},{CommitteeId:1},{CommitteeId:2}]; return _.uniq(l);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
Set
Array
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
**Benchmark Overview** MeasureThat.net is a platform for comparing the performance of different approaches to solving common problems in programming. In this benchmark, we're comparing two methods: using a `Set` data structure and using the `uniq()` function from the Lodash library. **What are being tested?** The test cases are designed to measure how quickly each approach can execute: 1. **Set**: Create an array with duplicate values and then return it as is. 2. **Array (Lodash)**: Pass an array to the `uniq()` function, which removes duplicates from the array. **Options compared** Two approaches are being compared: * Using a `Set` data structure * Using the `uniq()` function from Lodash library **Pros and Cons of each approach:** 1. **Using a Set** * Pros: + Simple to implement (create an array with duplicates, convert it to a set) + Efficient in terms of memory usage * Cons: + Can be slower than using the `uniq()` function for very large arrays + Not as widely supported or understood as the Lodash approach 2. **Using the uniq() function (Lodash)** * Pros: + Widely used and well-maintained library + Often optimized for performance in modern browsers * Cons: + Requires including an additional JavaScript file (Lodash) + May have overhead due to the inclusion of extra code **Library: Lodash** Lodash is a popular JavaScript utility library that provides a wide range of functions for data manipulation, functional programming, and more. The `uniq()` function is one of its most useful features, which removes duplicates from an array while preserving order. **Special JS feature/syntax** In the test case, we're using the `Set` constructor to create a set from an array with duplicate values. This is a built-in JavaScript feature that allows us to easily work with sets in our code. **Other alternatives** There are other ways to remove duplicates from an array without using a `Set` or Lodash's `uniq()` function, such as: * Using the `filter()` method and creating a new array: `arr.filter((x, i) => arr.indexOf(x) === i)` * Using a regular expression with the `g` flag: `var unique = arr.map((x, i) => arr.indexOf(x) === i ? x : null).filter(Boolean)` * Manual iteration over the array and adding elements to a new array only if they're not already present. However, these alternatives may be less efficient or more complex than using a `Set` or Lodash's `uniq()` function.
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