Benchmark: array.find() vs. array.some()

HTML Preparation code:

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

Tests:

array find
var a = ["ce", "b", "pl", "yqd", "tk", "ife", "wpjo", "ha", "ftic", "cjo", "vxi", "nvrx", "b", "vi", "vpwh", "t", "sfvz", "cndp", "l", "xy", "pkf", "ldwm", "ay", "zly", "xrp", "bora", "wj", "wgq", "ri", "zj", "yeic", "jlin", "qi", "xyi", "find", "some", "wgbr", "w", "xcznm", "rygz", "asgq", "qpw", "awc", "v", "qv", "sr", "lw", "hfr", "ylsl", "iug", "tcbv", "q", "yl", "yu", "w", "mij", "f", "ti", "qpc", "ter", "wjn", "vrjr", "lg", "pwl", "to", "ew", "app", "h", "mhwpb", "dv", "fh", "bvyzx", "me", "ky", "pm", "y", "aok", "a", "bb", "v", "zey", "bloe", "sau", "rqb", "i", "qki", "mzle", "ov", "t", "omdwh", "y", "j", "tffm", "zjp", "w", "xqz", "wg", "gea", "z", "fqd"]; var b = a.find(item => item === 'find');
array some
var a = ["ce", "b", "pl", "yqd", "tk", "ife", "wpjo", "ha", "ftic", "cjo", "vxi", "nvrx", "b", "vi", "vpwh", "t", "sfvz", "cndp", "l", "xy", "pkf", "ldwm", "ay", "zly", "xrp", "bora", "wj", "wgq", "ri", "zj", "yeic", "jlin", "qi", "xyi", "find", "some", "wgbr", "w", "xcznm", "rygz", "asgq", "qpw", "awc", "v", "qv", "sr", "lw", "hfr", "ylsl", "iug", "tcbv", "q", "yl", "yu", "w", "mij", "f", "ti", "qpc", "ter", "wjn", "vrjr", "lg", "pwl", "to", "ew", "app", "h", "mhwpb", "dv", "fh", "bvyzx", "me", "ky", "pm", "y", "aok", "a", "bb", "v", "zey", "bloe", "sau", "rqb", "i", "qki", "mzle", "ov", "t", "omdwh", "y", "j", "tffm", "zjp", "w", "xqz", "wg", "gea", "z", "fqd"]; var b = a.some(item => item === 'some');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
array find
array some

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 dive into the world of JavaScript microbenchmarks on MeasureThat.net.

The provided JSON represents a benchmark test case named "array.find() vs. array.some()" that compares the performance of two methods: `Array.prototype.find()` and `Array.prototype.some()` when used to check if an element exists in an array. The test is run on Firefox 111, running on a Windows desktop platform.

**What are we testing?**

We're comparing the execution speed of two methods:

1. `Array.prototype.find()`: This method returns the first element in the array that satisfies the provided testing function.
2. `Array.prototype.some()`: This method returns true if at least one element in the array satisfies the provided testing function.

**Options being compared**

The two options being compared are:

* `array.find(item => item === 'find')`
* `array.some(item => item === 'some')`

These expressions check for the existence of a specific string ('find' or 'some') in the array using the `===` operator. The `find()` method is used to find the first element that matches this condition, while the `some()` method returns true if at least one element in the array matches this condition.

**Pros and Cons**

Here's a brief summary of the pros and cons of each approach:

* `array.find()`
	+ Pros:
		- More efficient since it returns as soon as it finds the first matching element.
		- Can be more readable for developers familiar with the method.
	+ Cons:
		- May not be as performant if no elements match, leading to unnecessary iterations.
* `array.some()`
	+ Pros:
		- More performant since it returns true as soon as it finds a matching element, even if there are many matches.
		- Can be useful when you want to check if at least one condition is met without caring about the specific elements.
	+ Cons:
		- May not be as readable for developers unfamiliar with the method.

**Library usage**

The `lodash` library is used in both test cases, specifically the `lodash.core.js` module. Lodash provides a utility function called `some()` that can be used to check if at least one element in an array satisfies a condition.

**Special JS features**

There's no special JavaScript feature or syntax being used in this benchmark. It's purely about comparing the performance of two built-in methods (`find()` and `some()`).

**Alternatives**

If you're interested in exploring alternative approaches, here are some other options:

* Using `forEach()` to iterate over the array and check for the condition.
* Using a custom function or arrow function to check for the condition inside the `Array.prototype.find()` or `Array.prototype.some()` method.
* Using other libraries like underscore.js or Ramda, which provide similar methods for working with arrays.

Keep in mind that these alternatives might not be as performant or readable as using the built-in `find()` and `some()` methods.

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/111.0

Browser/OS: Firefox 111 on Windows

View result in a separate tab

Test name	Executions per second
array find	2279631.2 Ops/sec
array some	2130547.8 Ops/sec

Related benchmarks:

array.find() vs. array.some() (version: 0)

Test both methods when using them to check the existance of an element in an array.

Comparing performance of: array find vs array some

Created: one year ago by: Guest

Jump to the latest result

array find

array some

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):