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Object merge vs library merge Tomek
(version: 0)
Comparing performance of:
Object.assign vs jQuery extend vs Immutable merge vs Ramda merge vs Spread operator
Created:
7 years ago
by:
Registered User
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HTML Preparation code:
<script type='text/javascript' src='https://cdnjs.cloudflare.com/ajax/libs/immutable/3.8.2/immutable.min.js'></script> <script type='text/javascript' src='https://cdnjs.cloudflare.com/ajax/libs/ramda/0.25.0/ramda.min.js'></script> <script type='text/javascript' src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js'></script> <script type='text/javascript' src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.js'></script>
Tests:
Object.assign
var params = { a: "hello", b: true, c: 7 }; var other = Object.assign({}, { b: false, d: [ 1,2 ] }, params);
jQuery extend
var params = [1,2,3,4,5,6]; var other = $.extend({}, [7,8,9,10], params);
Immutable merge
var params = Immutable.fromJS([1,2,3,4,5,6]); var other = params.merge([7,8,9,10]);
Ramda merge
var params = [1,2,3,4,5,6]; var other = R.merge([7,8,9,10], params);
Spread operator
var params = [1,2,3,4,5,6]; var params2 = [7,8,9,10]; var output = [...params, ...params2]
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (5)
Previous results
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Test case name
Result
Object.assign
jQuery extend
Immutable merge
Ramda merge
Spread operator
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the world of JavaScript microbenchmarks. **Benchmark Overview** The provided benchmark measures the performance of different methods to merge two arrays: `Object.assign()`, jQuery's `$.extend()`, Immutable.js' `merge()`, Ramda's `merge()`, and the spread operator (`...`). **Options Compared** Here are the options being compared: 1. **Object.assign()**: This is a built-in JavaScript method that merges one or more source objects into another object. 2. **jQuery extend**: This is a function from jQuery library that merges two objects together. 3. **Immutable merge**: This is a function from Immutable.js library that merges two immutable collections (in this case, arrays) together. 4. **Ramda merge**: This is a function from Ramda library that merges two values together. 5. **Spread operator (`...`)**: This is a new syntax in JavaScript that allows you to create a new array by spreading the elements of an existing array. **Pros and Cons** Here are some pros and cons for each option: 1. **Object.assign()**: * Pros: widely supported, easy to use. * Cons: can be slower than other options, may not handle complex data structures well. 2. **jQuery extend**: * Pros: part of a popular library, easy to use. * Cons: requires jQuery library, may have performance issues if not used carefully. 3. **Immutable merge**: * Pros: provides immutable collections, which can be beneficial for certain use cases (e.g., concurrent programming). * Cons: may be slower than other options due to its immutability guarantees. 4. **Ramda merge**: * Pros: part of a popular functional programming library, provides a concise way to merge values. * Cons: requires Ramda library, may not be familiar to non-functional programmers. 5. **Spread operator (`...`)**: * Pros: concise and expressive syntax, widely supported. * Cons: relatively new syntax, may require some familiarity with its usage. **Libraries and Syntax** Here's a brief introduction to the libraries mentioned: 1. **Immutable.js**: A library for working with immutable data structures (collections, maps, sets, etc.). It provides a way to create and manipulate these structures in a predictable and thread-safe manner. 2. **Ramda**: A functional programming library that provides a set of functions for working with collections (arrays, objects, etc.). Its `merge()` function is used in the benchmark. 3. **jQuery**: A popular JavaScript library that provides a way to simplify DOM manipulation and event handling. The spread operator (`...`) is a new syntax introduced in ECMAScript 2015. It allows you to create a new array by spreading the elements of an existing array, or merge two arrays together using the `...` syntax (e.g., `[1,2,3,...,6]`). **Other Alternatives** If these options don't meet your needs, here are some alternative approaches: 1. **Loose assignment**: Using `=` to assign values from one object to another. ```javascript var other = { b: false }; Object.assign(other, { d: [ 1,2 ] }, params); ``` This approach is simple but may not be as efficient as the options compared in the benchmark. I hope this explanation helps you understand the JavaScript microbenchmark!
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