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Testing Spread 21062023
(version: 0)
Comparing performance of:
Spread vs Push
Created:
2 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var arr = [2, 5, 6, 9, 12, 45]
Tests:
Spread
const arr2 = [...arr, 5]
Push
arr.push(5)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
Spread
Push
Fastest:
N/A
Slowest:
N/A
Latest run results:
No previous run results
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided JSON benchmark and its test cases to understand what's being tested. **Benchmark Definition** The benchmark definition provides some metadata about the benchmark, such as its name, description (which is null in this case), script preparation code, and HTML preparation code (which is also null). The script preparation code defines an array `arr` with initial values. This suggests that the benchmark aims to compare the performance of different operations on arrays. **Individual Test Cases** There are two test cases: 1. **Spread**: This test case uses the spread operator (`...`) to create a new array by copying all elements from the original array `arr`, and then adds a new element (5) to it. 2. **Push**: This test case pushes a single element (5) onto the end of the original array `arr`. **Libraries Used** None. **Special JS Features/Syntax** None mentioned in this benchmark definition. Let's analyze the two test cases: * **Spread**: This approach creates a new array and modifies it, rather than modifying the original array. This can be beneficial if you need to preserve the original array's state or don't want to modify it. + Pros: Preserves original array's state, doesn't modify it. + Cons: Creates a new array, potentially increases memory usage. * **Push**: This approach modifies the original array directly, pushing the new element onto its end. This can be beneficial if you need to perform multiple operations on an array and want to avoid creating new arrays. + Pros: Modifies original array, potentially more efficient for multiple push operations. + Cons: Modifies the original array, may not preserve its state. **Other Alternatives** If you needed to test other approaches, some alternatives could be: * Using `Array.prototype.concat()` instead of the spread operator * Using `Array.prototype.push.apply()` instead of the `push` method * Creating a new array using `Array.from()` or `Array.of()` Keep in mind that these alternatives might have different performance characteristics and trade-offs, so it's essential to test them to determine which one is best for your specific use case. **Benchmark Result Interpretation** The latest benchmark result shows the raw UA string (User Agent), browser name, device platform, operating system, executions per second, and test name. The results indicate that: * Chrome 114 on Windows desktop achieved a higher number of executions per second (11544840) for the `push` operation compared to the spread operator (`9382859`).
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