Benchmark: native find vs lodash _.find altered

HTML Preparation code:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.core.js"></script>

Script Preparation code:

var users = [
  { 'user': 'joey',  'age': 32 },
  { 'user': 'ross',    'age': 41 },
  { 'user': 'ross',    'age': 42 },
  { 'user': 'ross',    'age': 43 },
  { 'user': 'ross',    'age': 44 },
  { 'user': 'ross',    'age': 45 },
  { 'user': 'ross',    'age': 46 },
  { 'user': 'ross',    'age': 48 },
  { 'user': 'ross',    'age': 49 },
  { 'user': 'ross',    'age': 40 },
  { 'user': 'ross',    'age': 41 },
  { 'user': 'ross',    'age': 42 },
  { 'user': 'ross',    'age': 43 },
  { 'user': 'chandler', 'age': 39 }
]

Tests:

array find
// Native users.find(o => o.age < 40)
_.find
_.find(users, function (o) { return o.age < 40; })

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
array find
_.find

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark definition and test cases.

**Benchmark Definition**

The benchmark compares two approaches to find an element in an array:

1. **Native `find` method**: The built-in JavaScript `find` method is used with an arrow function that takes an object `o` as an argument and returns a boolean value indicating whether the `age` property of `o` is less than 40.
2. **Lodash `.find` method**: The Lodash library is used to find an element in the `users` array using its own implementation of the `find` method, which takes two arguments: the array and a callback function.

**Options Compared**

The benchmark compares the performance of these two approaches:

* Native `find` method
* Lodash `.find` method with a custom callback function

**Pros and Cons**

* **Native `find` method**:
	+ Pros: Built-in JavaScript implementation, likely to be optimized for performance.
	+ Cons: Requires explicit use of arrow functions or traditional function syntax, which may lead to additional overhead due to function creation and lookup.
* **Lodash `.find` method with custom callback**: 
	+ Pros: Can provide more flexibility and control over the search criteria using Lodash's extensive array methods, including chaining multiple methods for complex searches.
	+ Cons: Introduces an external library dependency, which may lead to additional overhead due to loading and initialization.

**Library Used**

Lodash is a popular utility library for JavaScript that provides various helper functions for tasks like array manipulation, object iteration, and more. In this case, the `.find` method from Lodash is used to find an element in the `users` array based on a custom callback function.

**Special JS Feature or Syntax**

There are no special JavaScript features or syntaxes used in this benchmark. The arrow function and callback functions are standard JavaScript constructs that do not introduce any new features or syntax.

**Other Alternatives**

In addition to native `find` method and Lodash `.find` method, other alternatives for finding an element in an array include:

* Using the `some` method with a callback function: `users.some(o => o.age < 40)`
* Using the `every` method with a callback function: `users.every(o => o.age >= 40)`
* Using a simple loop or for-each iteration

However, these alternatives are not directly compared in this benchmark.

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:104.0) Gecko/20100101 Firefox/104.0

Browser/OS: Firefox 104 on Mac OS X 10.15

View result in a separate tab

Test name	Executions per second
array find	46078964.0 Ops/sec
_.find	6571148.5 Ops/sec

Related benchmarks:

native find vs lodash _.find altered (version: 0)

Compare the new ES6 spread operator with the traditional concat() method

Comparing performance of: array find vs _.find

Created: 2 years ago by: Guest

Jump to the latest result

array find

_.find

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):