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Spread vc push
(version: 0)
Comparing performance of:
spread vs iterate
Created:
5 years ago
by:
Registered User
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Tests:
spread
var size = 10000; var arr3 = []; for (var i = 0; i < size; i++){ arr3 = [...arr3,i] }
iterate
var size = 10000; var arr3 = []; for (var i = 0; i < size; i++){ arr3.push(i); }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
spread
iterate
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark JSON and explain what's being tested. **Benchmark Definition** The benchmark definition is empty, which means that the script preparation code and HTML preparation code are also left blank. This implies that the benchmark only focuses on measuring the execution time of a specific JavaScript snippet. **Individual Test Cases** There are two test cases: 1. **"spread"`**: The benchmark definition contains a simple loop that creates an array `arr3` with 10,000 elements using the spread operator (`[...arr3,i]`). This is compared to... 2. **"iterate"`**: ...the same loop but uses the `push()` method instead of the spread operator (`arr3.push(i)`). **Options Compared** The benchmark tests two different approaches for creating an array in JavaScript: * **Spread Operator**: Using the spread operator (`[...arr3,i]`) to create a new array with elements. * **Push Method**: Using the `push()` method to add elements to an existing array. **Pros and Cons of Each Approach** **Spread Operator (``) Pros:** * More concise and expressive syntax * Creates a new, shallow-copied array * Can be more efficient for large datasets **Spread Operator (``) Cons:** * May require more memory allocation than `push()` * Can lead to unexpected behavior if used incorrectly **Push Method (`arr3.push(i)` Pros:** * More efficient in terms of memory allocation * Can avoid unnecessary array copying **Push Method (`arr3.push(i)` Cons:** * Less concise and less expressive syntax * Modifies the existing array, which may not be desirable for some use cases **Library Usage** None of the benchmark definitions use any external libraries. **Special JS Feature/Syntax** Neither of the test cases uses any special JavaScript features or syntax that's specific to a particular browser or environment. However, it's worth noting that the `for...of` loop is not used in either test case, which may be an interesting alternative approach for creating arrays. **Alternatives** If you were to create a new benchmark, you could consider adding additional test cases that explore other ways of creating arrays, such as: * Using the `Array.prototype.push()` method with a callback function * Creating an array using a generator function or an iterator * Using a library like Lodash's `cloneDeep` function to clone the original array
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