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push vs spread 1236572346234
(version: 0)
Comparing performance of:
push vs spread
Created:
5 years ago
by:
Guest
Jump to the latest result
Tests:
push
const arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]; const result = arr.push(11);
spread
const arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]; const result = [...arr, 11];
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
push
spread
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 world of JavaScript microbenchmarks! **Benchmark Definition** The provided benchmark definition is a JSON object that describes the test case. It contains the following information: * `Name`: The name of the benchmark, which in this case is "push vs spread 1236572346234". * `Description`: An empty string, indicating that there's no descriptive text for this benchmark. * `Script Preparation Code` and `Html Preparation Code`: Both are empty strings, suggesting that no code needs to be executed before running the test. **Test Cases** The individual test cases are defined in an array of objects. Each object contains a single property: * `Benchmark Definition`: A string containing JavaScript code that defines the benchmark. In this case, there are two test cases: + "push": This test case uses the built-in `push()` method to add an element to an array. + "spread": This test case uses the spread operator (`...`) to create a new array with the original array elements plus a new element. **Options Compared** The benchmark is comparing two different approaches: 1. Using the `push()` method 2. Using the spread operator (`...`) Both methods are used to add an element to an existing array, but they work in different ways and have different performance implications. **Pros and Cons of Each Approach:** ### Push Method Pros: * More concise and expressive code * Less overhead compared to creating a new array using `spread` Cons: * May be slower due to the need to check if the array is large enough to push to * Can lead to issues with array length being too small, causing errors ### Spread Operator Pros: * Creates a new array without modifying the original one * Faster performance compared to the `push()` method, especially for larger arrays Cons: * More verbose code * Can be slower due to the overhead of creating a new array **Library:** There is no specific library mentioned in the benchmark definition. However, the use of the spread operator (`...`) suggests that the test case assumes the presence of modern JavaScript features. **Special JS Feature or Syntax:** The use of the spread operator (`...`) is an example of a feature introduced in ECMAScript 2015 (ES6). The `push()` method has been part of the language since its inception, making it more widely supported across browsers and versions. **Alternatives:** If you wanted to run this benchmark on different JavaScript implementations or environments, you could experiment with: * Using a different array size or type * Adding more elements to the test case * Comparing the results with other approaches, such as using `concat()` or `slice()` * Testing with different browsers or versions Keep in mind that the performance difference between these methods may be negligible for small arrays, but can become significant when dealing with larger datasets.
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