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lodash assign vs spread operator 2
(version: 0)
lodash assign vs spread operator
Comparing performance of:
lodash vs native
Created:
4 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 person = {name: 'Frederick', lastName: 'Corcino Alejo'}; var age = {age: 15}
Tests:
lodash
let copied = _.assign({}, person, age);
native
let copied = {...person, ...age};
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
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 dive into the world of JavaScript microbenchmarks on MeasureThat.net. **Benchmark Overview** The benchmark being measured is comparing two approaches: using `_.assign()` from the Lodash library and using the spread operator (`...`). **Options Compared** There are only two options compared: 1. **Lodash Assign**: Using the `_.assign()` method from Lodash, which is a utility library for functional programming in JavaScript. 2. **Native Spread Operator**: Using the spread operator (`...`) to merge objects. **Pros and Cons of Each Approach** ### Lodash Assign * **Pros**: + More readable code: The `_.assign()` method clearly expresses the intention of merging two objects. + Easier to maintain: If you need to customize the merge behavior, you can use additional options with `_.` (e.g., `_().assign()`) * **Cons**: + Additional dependency: You need to include Lodash in your project, which may add unnecessary size and complexity. ### Native Spread Operator * **Pros**: + No additional dependency: Using the spread operator is a built-in feature of modern JavaScript. + More efficient: The compiler can optimize the spread operator better than calling an external function. * **Cons**: + Less readable code: The syntax `...person, ...age` may be less obvious to developers unfamiliar with this pattern. **Library - Lodash** Lodash is a popular utility library for functional programming in JavaScript. It provides a wide range of functions for tasks like array manipulation, object merging, and more. In this benchmark, `_.assign()` is used to merge two objects. **Special JS Feature/Syntax** The spread operator (`...`) was introduced in ECMAScript 2015 (ES6) and has since become a standard feature in modern JavaScript. It allows you to create new arrays or objects by copying elements from existing ones. **Other Alternatives** If you don't want to use Lodash, you can also use other libraries like `lodash-es` (which is an ES6-compatible version of Lodash) or `merge-deep` (a lightweight alternative for deep object merging). Alternatively, if you prefer not to use any external library or built-in feature, you can implement the merge logic manually using loops or recursive functions. For this specific benchmark, MeasureThat.net already compares two popular approaches, and the results are available in the provided output.
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