Benchmark: array find vs some vs lodash

HTML Preparation code:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.core.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.core.js"></script>

Tests:

array find
var a = [{a: 'hello'}, {a: 'a'}, {a: 'bc'}, {a: 'ad'}, {a: 'mg'}, {a: 'asd'}]; var b = a.find(item => item.a === 'bc');
array some
var a = [{a: 'hello'}, {a: 'a'}, {a: 'bc'}, {a: 'ad'}, {a: 'mg'}, {a: 'asd'}]; var b = a.some(item => item.a === 'bc');
lodash some
var a = [{a: 'hello'}, {a: 'a'}, {a: 'bc'}, {a: 'ad'}, {a: 'mg'}, {a: 'asd'}]; var b = _.some(a, ['a', 'bc']);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
array find
array some
lodash some

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):

LLMs can make mistakes. Check important info.

Let's dive into the benchmark and explain what's being tested.

**What is being tested?**

The provided JSON represents a microbenchmark that compares three different approaches to filter an array:

1. `Array.prototype.find()`: This method returns the first element in the array that satisfies the provided condition.
2. `Array.prototype.some()`: This method returns `true` if at least one element in the array satisfies the provided condition.
3. `_` (lodash): A popular JavaScript library for functional programming utilities, including filtering functions.

**Options compared**

The benchmark compares three options:

* `Array.prototype.find()` with a callback function
* `Array.prototype.some()` with a callback function
* `lodash.some()` with an array of values to filter

**Pros and Cons**

Here are some pros and cons for each approach:

1. `Array.prototype.find()`:
	* Pros: Efficient, straightforward, and easy to use.
	* Cons: Returns only the first matching element, may not be suitable for all use cases (e.g., when you need all matches).
2. `Array.prototype.some()`:
	* Pros: More efficient than using `find()` in a loop, returns as soon as it finds the first match, and is more concise.
	* Cons: May return false if no match is found, whereas `find()` returns undefined.
3. `lodash.some()`: 
	* Pros: Offers more flexibility and control over filtering, can be used with arrays of values, and is often faster than native methods.
	* Cons: Requires an external library (lodash), has a learning curve for advanced users.

**Library usage**

In this benchmark, the lodash library is used in two test cases:

* `Array.prototype.some()` using `_.some(a, ['a', 'bc'])`
* `lodash.some()` using `var b = _.some(a, ['a', 'bc'])`

Lodash provides a set of functional programming utilities, including filtering functions like `some()`. The `_` notation is used to access these utility functions.

**Special JS feature or syntax**

None of the test cases use any special JavaScript features or syntax that would require explanation beyond the basics of array methods and lodash usage.

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36

Browser/OS: Chrome 93 on Windows

View result in a separate tab

Test name	Executions per second
array find	24836364.0 Ops/sec
array some	24301470.0 Ops/sec
lodash some	1803008.0 Ops/sec

Related benchmarks:

array find vs some vs lodash (version: 0)

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

Comparing performance of: array find vs array some vs lodash some

Created: 3 years ago by: Guest

Jump to the latest result

array find

array some

lodash some

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):