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trsasdasd
(version: 0)
Comparing performance of:
getUnique vs getUniqueArray
Created:
2 years ago
by:
Guest
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Script Preparation code:
a = new Array(10000).fill(1);
Tests:
getUnique
const getUnique = arr => { const u = {}; const a = []; const l = arr.length; for (let i = 0; i < l; i += 1) { // eslint-disable-next-line no-prototype-builtins if (!u.hasOwnProperty(arr[i])) { a.push(arr[i]); u[arr[i]] = 1; } } return a; }; getUnique(a)
getUniqueArray
const getUniqueArray = arr => Array.from(new Set(arr)); getUniqueArray(a)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
getUnique
getUniqueArray
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
**Benchmark Overview** The provided benchmark, hosted on MeasureThat.net, aims to measure the performance of two different approaches for removing duplicates from an array in JavaScript. **Script Preparation Code** The script preparation code is a simple JavaScript snippet that initializes an array `a` with 10,000 elements, all set to 1. This array will be used as input for the benchmark tests. **Benchmark Definition** The benchmark definition is a JSON object that contains two test cases: 1. **getUnique** * This function takes an array as input and returns a new array containing only unique elements. * The implementation uses a simple approach with a loop, pushing each element to an array `a` and checking if it already exists in an object `u`. If not, it's added to the output array `a`. 2. **getUniqueArray** * This function also takes an array as input and returns a new array containing only unique elements. * The implementation uses the built-in `Array.from()` method with the `Set` constructor, which creates a set of unique elements from the input array. **Options Compared** The two test cases compare the performance of two different approaches: 1. **getUnique**: A custom implementation using a loop and an object to keep track of unique elements. 2. **getUniqueArray**: A built-in implementation using the `Set` constructor and `Array.from()` method. **Pros and Cons of Each Approach** 1. **getUnique**: * Pros: Custom implementation, can be optimized for specific use cases. * Cons: More complex code, may have performance overhead due to object lookup. 2. **getUniqueArray**: * Pros: Built-in method, efficient and lightweight. * Cons: May have limited control over the optimization process. **Library Used** Neither of the test cases uses a library explicitly, but the `Set` constructor is a built-in JavaScript feature that provides an efficient way to store unique elements. The `Array.from()` method is also a standard JavaScript method for converting an array to another type of iterable. **Special JS Features or Syntax** None mentioned in this explanation, as the tests focus on simple algorithmic approaches rather than leveraging advanced JavaScript features like async/await, promises, or decorators. **Other Alternatives** Other alternatives for removing duplicates from an array could include: 1. Using a library like Lodash or Ramda, which provide optimized functions for common tasks. 2. Utilizing modern JavaScript features like `Map` or `WeakSet` to store unique elements. 3. Implementing a more complex algorithm, such as using a hash table or a trie data structure. These alternatives would depend on the specific requirements and constraints of the project, such as performance, readability, and maintainability.
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