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Performance test between slice and push
(version: 0)
Comparing performance of:
Slice vs push
Created:
3 years ago
by:
Guest
Jump to the latest result
Tests:
Slice
let array = [0,1] array.slice(0,1);
push
let array = [0]; array.push(1);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Slice
push
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 break down the provided benchmark test cases and explain what is being tested, compared, and analyzed. **Benchmark Overview** The test compares two common array operations in JavaScript: `slice()` and `push()`. The goal is to measure which operation performs better in terms of performance. **Benchmark Definition JSON** The provided JSON represents a single benchmark definition, which includes the following information: * `Name`: A unique name for the benchmark. * `Description`: An optional description of the benchmark (in this case, it's empty). * `Script Preparation Code` and `Html Preparation Code`: These fields are empty, indicating that no custom code needs to be executed before running the benchmark or rendering the HTML page. **Individual Test Cases** There are two individual test cases: 1. **Slice**: The first test case measures the performance of the `slice()` method. * Benchmark Definition: `let array = [0,1]\r\narray.slice(0,1);` 2. *push*: The second test case measures the performance of the `push()` method. * Benchmark Definition: `let array = [0];\r\narray.push(1);` **Comparison** The two tests compare the performance of `slice()` and `push()`. The results will show which operation is faster for a given JavaScript engine, browser, device platform, operating system, and execution frequency. **Options Compared** In this case, there are only two options being compared: * `slice()` * `push()` The pros and cons of these approaches are as follows: Pros of `slice()`: * Efficient way to extract a subset of an array. * Reduces the need for indexing or manual iteration. Cons of `slice()`: * May require additional memory allocation, depending on the input size. * Can be slower than `push()` in some cases due to the overhead of creating a new array. Pros of `push()` * Efficient way to add an element to the end of an array. * Does not require allocating new memory (unless the array is large). Cons of `push()`: * May be slower than `slice()` for extracting subsets, as it involves adding elements one by one. * Can lead to increased memory usage if the array grows too large. **Library Usage** There are no libraries explicitly mentioned in the provided JSON. However, it's worth noting that some JavaScript engines or browsers might use internal libraries or optimizations that could impact the performance of these tests. **Special JS Features/Syntax** The benchmark does not appear to utilize any special JavaScript features or syntax, such as async/await, promises, or Web Workers. It only uses basic JavaScript syntax and built-in methods like `slice()` and `push()`. **Alternatives** If you want to compare the performance of other array operations or optimize these tests for better accuracy, consider the following alternatives: * Use different input sizes or data distributions (e.g., random numbers, strings, or objects) to simulate real-world scenarios. * Add more test cases that cover different edge cases, such as: + Empty arrays + Large arrays + Arrays with duplicate elements + Arrays with negative numbers or non-numeric values * Experiment with different JavaScript engines, browsers, or device platforms to see how they affect performance. * Consider using benchmarking frameworks like BenchmarkJS or jsperf to create more complex and accurate tests.
Related benchmarks:
Spread vs slice test
Array.prototype.slice vs spread op
.slice() with .push() VS .slice() with .splice()
Spread vs Slice operators in JS
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