Benchmark: Some vs Find!!!!!!!!!!

Script Preparation code:

var data = []

for (let i = 0; i < 20000; ++i) data.push({ username: 'toto' })
data.push({ username: 'titi' })
for (let i = 0; i < 10000; ++i) data.push({ username: 'toto' })

Tests:

Find
data.find(e => e.username === 'titi')
Some
data.some(e => e.username === 'titi')
FindIndex
data.findIndex(e => e.username === 'titi')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Find
Some
FindIndex

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one month ago):

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks!

**Benchmark Definition JSON Explanation**

The provided JSON represents a benchmark definition for measuring the performance of three different methods:

1. `data.find(e => e.username === 'titi')`: This method searches for an element in the array that matches the specified condition.
2. `data.some(e => e.username === 'titi')`: This method returns a boolean value indicating whether at least one element in the array matches the specified condition.
3. `data.findIndex(e => e.username === 'titi')`: This method returns the index of the first element in the array that matches the specified condition, or -1 if no element is found.

**Options Compared**

The benchmark compares three different approaches:

* `find()`
* `some()`
* `findIndex()`

These methods are used to search for an element in an array. The main difference between them is what they return when no matching element is found:

* `find()` returns `undefined` if no element is found.
* `some()` returns `false`.
* `findIndex()` returns -1.

**Pros and Cons of Each Approach**

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

* `find()`: This method is suitable when you need to retrieve the first matching element. However, if no element is found, it can lead to unnecessary iterations in subsequent code.
	+ Pros: Efficient for finding the first matching element.
	+ Cons: May lead to unnecessary iterations if no element is found.
* `some()`: This method is suitable when you only need to determine whether at least one element matches the condition. However, it returns a boolean value, which may not be what you expect from an array search operation.
	+ Pros: Efficient for determining whether any element matches the condition.
	+ Cons: Returns a boolean value instead of the actual matching element.
* `findIndex()`: This method is suitable when you need to retrieve the index of the first matching element. It returns -1 if no element is found, which can be more explicit than `undefined`.
	+ Pros: Efficient for finding the index of the first matching element and handling cases where no element is found.
	+ Cons: May require additional code to handle cases where no element is found.

**Library**

The benchmark uses the `Array.prototype.find()`, `Array.prototype.some()`, and `Array.prototype.findIndex()` methods, which are part of the modern JavaScript standard library. These methods provide a concise way to search for elements in arrays.

**Special JS Feature or Syntax**

There are no special features or syntaxes used in this benchmark that would require additional explanation.

**Alternatives**

Other alternatives for searching elements in an array include:

* `indexOf()`: This method returns the index of the first occurrence of a specified value. If no element is found, it returns -1.
* `includes()`: This method returns a boolean value indicating whether the array includes a specified value.
* Custom loops or recursive functions: These approaches can be used to search for elements in an array, but they are generally less efficient and more verbose than the standard library methods.

In conclusion, the benchmark provides a simple and informative way to compare the performance of three different methods for searching elements in an array. By understanding the pros and cons of each approach, developers can choose the most suitable method for their specific use case.

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:120.0) Gecko/20100101 Firefox/120.0

Browser/OS: Firefox 120 on Windows

View result in a separate tab

Test name	Executions per second
Find	10067.5 Ops/sec
Some	7536.7 Ops/sec
FindIndex	8894.1 Ops/sec

Related benchmarks:

Some vs Find!!!!!!!!!! (version: 0)

Comparing performance of: Find vs Some vs FindIndex

Created: one year ago by: Guest

Jump to the latest result

Find

Some

FindIndex

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one month ago):