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._range vs Array
(version: 0)
Comparing performance of:
Lodash ._range vs javascript array
Created:
3 years ago
by:
Registered User
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HTML Preparation code:
<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>
Tests:
Lodash ._range
_.range(1,5)
javascript array
[...Array(4).keys()].map(i => i + 1);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
Lodash ._range
javascript array
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark and explain what's being tested. **What is being tested?** MeasureThat.net is testing two different approaches to create an array of numbers: using the `_.range()` function from the Lodash library, and using JavaScript's built-in array creation syntax (`[...Array(4).keys()].map(i => i + 1)`). The benchmark aims to determine which approach is faster and more efficient. **Options compared** There are two options being compared: 1. **Lodash _.range()**: This function generates an array of numbers within a specified range (in this case, from 1 to 5). The Lodash library provides a convenient way to perform common tasks like array generation. 2. **JavaScript array creation syntax**: This approach uses the `Array` constructor, `keys()` method, and `map()` function to create an array of numbers. It requires manual implementation of these functions. **Pros and cons of each approach** 1. **Lodash _.range()** * Pros: + Convenient and easy to use + Reduces code duplication and boilerplate * Cons: + Requires including the Lodash library, which may add overhead + May not be as efficient as a custom implementation 2. **JavaScript array creation syntax** * Pros: + No additional library dependencies + Can be optimized for performance with careful implementation * Cons: + Requires more manual implementation and code duplication **Library: Lodash** Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks like array manipulation, string manipulation, and functional programming. The `_.range()` function is part of the Lodash library's array utilities. **Special JS feature/syntax: None mentioned** There are no special JavaScript features or syntax mentioned in this benchmark. **Other alternatives** In general, when creating arrays in JavaScript, there are other approaches that can be considered: 1. **Using `Array.from()`**: This method creates an array from an iterable object (like a range) and is often more efficient than the array creation syntax. 2. **Using `Array.prototype.slice()`**: This method creates a shallow copy of a portion of an array, which can be useful for creating arrays with specific ranges. However, these alternatives are not being compared in this benchmark. Overall, the benchmark highlights the importance of choosing the most efficient approach to create arrays in JavaScript, considering factors like library dependencies, code readability, and performance.
Related benchmarks:
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_.range(N) vs [...Array(N).keys()]
lodash range vs Array.from vs keys() + spread 234das
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