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Testy Test
(version: 0)
Comparing performance of:
Lodash map vs Keys loop vs For...in
Created:
6 years ago
by:
Guest
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HTML Preparation code:
<script src="https://cdn.jsdelivr.net/lodash/4.16.0/lodash.min.js"></script>
Script Preparation code:
var value = {a: 30310, b: 100303, c: 3040494};
Tests:
Lodash map
_.map(value, (v) => v+1)
Keys loop
Object.keys(value).map((v) => v+1)
For...in
const newValue = [] for (v in value) { newValue.push(v+1) }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
Lodash map
Keys loop
For...in
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 explanation into smaller parts. **Benchmark Definition** The provided JSON represents a JavaScript benchmark, which is a set of test cases designed to measure the performance of different programming approaches in JavaScript. The benchmark definition includes: * **Script Preparation Code**: This section contains the code that sets up the environment for each test case. In this case, it creates an object `value` with three properties: `a`, `b`, and `c`. This object will be used as input for the test cases. * **Html Preparation Code**: This section includes a script tag that loads the Lodash library (version 4.16.0) from a CDN. Lodash is a popular JavaScript utility library that provides various functions for tasks like array manipulation, string processing, and more. **Test Cases** The benchmark definition includes three test cases: 1. **Lodash map**: This test case uses the `_.map()` function from Lodash to transform each element in the `value` object by adding 1. 2. **Keys loop**: This test case uses a simple loop to iterate over the properties of the `value` object and add 1 to each property value. 3. **For...in**: This test case uses a traditional `for...in` loop to iterate over the properties of the `value` object and add 1 to each property value. **Options compared** The benchmark compares three different approaches: * **Lodash map**: Uses Lodash's `_.map()` function to transform the array. * **Keys loop**: Uses a traditional loop to iterate over the array. * **For...in**: Uses a `for...in` loop to iterate over the object. **Pros and Cons** Here's a brief summary of the pros and cons of each approach: * **Lodash map**: Pros: + Often faster due to optimized implementation + Reduced memory allocation overhead + Easier to read and write code Cons: + Adds dependency on Lodash library + May not be suitable for all use cases (e.g., non-array data) * **Keys loop**: Pros: + Simple and easy to understand + No additional dependencies required Cons: + Can be slower due to iteration overhead + More verbose code * **For...in**: Pros: + Can be faster for large datasets + Avoids dependency on Lodash library Cons: + More complex and error-prone than Keys loop + May not work correctly with non-enumerable properties **Library: Lodash** Lodash is a popular JavaScript utility library that provides various functions for tasks like array manipulation, string processing, and more. In this benchmark, the `_.map()` function is used to transform each element in the `value` object. **Special JS Feature/Syntax: None** There are no special JavaScript features or syntax used in this benchmark. **Alternatives** Some alternatives to the approaches compared in this benchmark include: * Using other libraries like Array.prototype.map() or modern array methods (e.g., `map()`, `forEach()`) * Implementing custom loops or iterators * Using functional programming techniques (e.g., arrow functions, closures) * Utilizing Web Assembly or other low-level optimization techniques Keep in mind that the choice of approach depends on the specific use case and performance requirements.
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