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compare push with desttructuring
(version: 0)
Comparing performance of:
with just push vs creating new with destructure
Created:
2 years ago
by:
Registered User
Jump to the latest result
Script Preparation code:
var outArray = [] var inArray = ['a', 'b', 'c']
Tests:
with just push
outArray.push (...inArray)
creating new with destructure
var newOut = [...inArray]
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
with just push
creating new with destructure
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the explanation. The provided JSON represents a JavaScript microbenchmark on MeasurThat.net, which compares two approaches to performing array operations: using `Array.prototype.push()` and destructuring arrays with the spread operator (`[...]`). **Benchmark Definition** The benchmark definition consists of: 1. **Script Preparation Code**: This code initializes two empty arrays, `outArray` and `inArray`, which will be used in the test cases. 2. **Html Preparation Code**: There is no HTML preparation code provided, so we'll focus on the JavaScript aspects. **Individual Test Cases** There are two test cases: 1. **"with just push"`**: This test case measures the performance of using `Array.prototype.push()` to add elements to an array. * Benchmark Definition: `outArray.push (...inArray)` 2. **"creating new with destructure"`**: This test case measures the performance of creating a new array by destructuring the original array with the spread operator (`[...]`). * Benchmark Definition: `var newOut = [...inArray]` **Options Compared** The two options being compared are: 1. **Using `Array.prototype.push()`**: A traditional approach to adding elements to an array. 2. **Destructuring arrays with the spread operator**: A newer, more concise way of creating a new array by copying elements from another array. **Pros and Cons** Here's a brief summary of the pros and cons of each approach: * **Using `Array.prototype.push()`**: + Pros: Widely supported, easy to understand. + Cons: May lead to performance issues for large arrays due to the need for repeated indexing and copying. * **Destructuring arrays with the spread operator**: + Pros: More concise, efficient, and modern syntax. + Cons: Less widely supported in older browsers or JavaScript engines. **Library and Special JS Features** There are no libraries explicitly mentioned in the benchmark definition. However, it's worth noting that some modern JavaScript engines (like V8) have optimized support for the spread operator (`[...]`). If we were to consider special JavaScript features, we could mention: * **Destructuring syntax**: Introduced in ECMAScript 2015 (ES6), this feature allows for concise array creation and other operations. * **Array.prototype.push()**: A standard method on all arrays, widely supported across different browsers and engines. **Alternatives** Other alternatives to compare the performance of these two approaches might include: 1. Using `Array.prototype.concat()` instead of `push()`. 2. Creating a new array using `Array.from()` or `new Array(length)`. 3. Comparing performance between different JavaScript engines (e.g., V8, SpiderMonkey). Keep in mind that this is just a starting point for analysis and discussion. The actual results may vary depending on the specific browser, engine, and hardware being tested. Hope this explanation helps!
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