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foooooooooooooo
(version: 0)
Comparing performance of:
Lodash vs native array building
Created:
5 years ago
by:
Guest
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HTML Preparation code:
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js'></script>
Tests:
Lodash
_.range(1, 9)
native array building
const foo = [...Array(10).keys()];
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Lodash
native array building
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'll break down the provided JSON and explain what's being tested, compared, and other considerations. **Benchmark Definition** The benchmark definition is represented by a JSON object that specifies the script preparation code, HTML preparation code, and description for the benchmark. In this case: * Script Preparation Code: None (empty string) * HTML Preparation Code: This loads the Lodash library using a CDN. * Description: None This means that the test will run without any specific setup or initialization code. **Individual Test Cases** There are two individual test cases: 1. `_.range(1, 9)`: This is a Lodash function that generates an array from 1 to 8 (since the end value is exclusive). The `_` symbol is often used as a shorthand for the Lodash library. 2. `const foo = [...Array(10).keys()];`: This creates a new array with numbers from 0 to 9 using the spread operator and the `keys()` method. **Libraries** In this benchmark, we have one library being used: * **Lodash**: A popular utility library for JavaScript that provides functions for tasks such as array manipulation, string iteration, and more. The `_range` function generates an array of numbers from 1 to 8. **Special JS Features/Syntax** There are no special JS features or syntax being tested in this benchmark. Both test cases use standard JavaScript features like arrays and the `const` keyword. **Comparison Options** The benchmark compares two options: 1. **Lodash**: Using the Lodash library to generate an array. 2. **Native Array Building**: Creating a new array using the spread operator and the `keys()` method without relying on a library. **Pros and Cons of Each Approach** Here's a brief overview of each approach: * **Lodash**: + Pros: Faster execution (likely due to optimized implementations), easier to use for complex iterations. + Cons: Adds an extra dependency, may not be suitable for smaller projects or those with limited resources. * **Native Array Building**: + Pros: No additional dependencies required, more control over the creation process. + Cons: May be slower due to the overhead of generating numbers on the fly. **Other Considerations** When choosing between these approaches, consider factors such as: * Performance requirements: If speed is critical, using Lodash might provide a performance boost. However, if the application doesn't require high-performance iteration, native array building could be sufficient. * Resource constraints: In smaller projects or those with limited resources, native array building can help reduce dependencies and overhead. **Alternatives** Other alternatives for testing array creation benchmarks include: * **ES6 Array.from()**: Using `Array.from()` to create an array from a range of numbers (e.g., `Array.from({ length: 10 }, (_, i) => i + 1)`). * **Indexed arrays**: Creating arrays with manual indexing using `new Int32Array(10).fill(0).map((_, i) => i)`. These alternatives might not provide the same performance benefits as native array building or Lodash, but can still be useful for testing specific use cases.
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