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array.map vs _.map
(version: 0)
Comparing performance of:
Native map vs _.map
Created:
5 years ago
by:
Guest
Jump to the latest result
HTML Preparation code:
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
Script Preparation code:
var array = ['a', 'b', 'c']
Tests:
Native map
array.map((value, index) => { console.log(value) })
_.map
_.map(array, (value, index) => { console.log(value) })
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Native map
_.map
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 benchmark and explain what's being tested. **Benchmark Overview** The benchmark compares the performance of two approaches to iterate over an array: using JavaScript's native `map()` function versus using the popular utility library Lodash's `_map()` function. **Options Compared** Two options are compared: 1. **Native `map()`**: This is a built-in JavaScript function that applies a transformation to each element in an array. 2. **Lodash's `_map()`**: This is a part of the Lodash library, which provides a functional programming style for working with arrays. **Pros and Cons** * **Native `map()`**: + Pros: It's built-in, so it's likely to be implemented efficiently by the JavaScript engine. + Cons: It may have slower performance due to overhead from calling a built-in function. * **Lodash's `_map()`**: + Pros: It can provide better performance because it's implemented in C++ and optimized for speed. + Cons: It requires including an external library, which may add overhead. **Library - Lodash** Lodash is a popular utility library that provides a wide range of functions for working with arrays, objects, and more. The `_map()` function is one of the most commonly used functions in Lodash, allowing you to transform each element in an array. **Special JS Feature/Syntax** The benchmark uses ES6 syntax, specifically arrow functions (`=>`) and template literals (`<script src='https://...'`). This is a relatively modern JavaScript feature that was introduced in ECMAScript 2015 (ES6). **Other Alternatives** If you're interested in testing other approaches to iterating over arrays, some alternatives could include: * Using a custom loop with `forEach()` or `for` loops * Using a different library like Moment.js for array transformations * Testing using WebAssembly or other low-level optimizations However, these alternatives might not be as relevant to this specific benchmark, which is focused on comparing native JavaScript's `map()` function versus Lodash's `_map()` function. Overall, this benchmark provides a simple and practical way to compare the performance of two different approaches to iterating over arrays in JavaScript.
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