Benchmark: Find vs Some - Hvad er mest effektivt?

HTML Preparation code:

first

Script Preparation code:

var data = []

for (let i = 0; i < 5000; ++i) data.push({ kodenr: i  })

Tests:

some 1000
data.some(e => e.kodenr === 1000)
find 1000
data.find(e => e.kodenr === 1000)
some 2500
data.some(e => e.kodenr === 2500)
find 2500
data.find(e => e.kodenr === 2500)
Some 5000
data.some(e => e.kodenr === 5000)
Find 5000
data.find(e => e.kodenr === 5000)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
some 1000
find 1000
some 2500
find 2500
Some 5000
Find 5000

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36

Browser/OS: Chrome 87 on Windows 7

View result in a separate tab

Test name	Executions per second
some 1000	897190.8 Ops/sec
find 1000	896560.8 Ops/sec
some 2500	194600.5 Ops/sec
find 2500	185779.2 Ops/sec
Some 5000	52774.0 Ops/sec
Find 5000	57126.2 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks and explore what's being tested on this particular benchmark.

**Overview**

The provided JSON represents a set of test cases for finding or filtering elements in an array using the `some` and `find` methods. The script preparation code initializes an array with 5000 objects, each containing a unique key-value pair. The HTML preparation code is empty, indicating that this is a client-side benchmark.

**Options being compared**

The benchmark compares the performance of two approaches:

1. **`data.some(e => e.kodenr === 1000)`**: This method tests whether at least one element in the array has a key-value pair where `kodenr` equals 1000.
2. **`data.find(e => e.kodenr === 1000)`**: This method returns the first element in the array that has a key-value pair where `kodenr` equals 1000.

**Pros and Cons**

* **`some` method:**
	+ Pros:
		- More efficient for large arrays, as it stops iterating as soon as it finds a match.
		- Can be faster because it doesn't need to create a new object or copy data.
	+ Cons:
		- May return `undefined` if no elements match the condition.
		- May not be suitable for cases where you want the first matching element (i.e., `find`).
* **`find` method:**
	+ Pros:
		- Returns a specific value, making it easier to handle the result.
		- Suitable for cases where you need the first matching element.
	+ Cons:
		- May be slower than `some` because it needs to iterate over the entire array.

**Library usage**

There is no explicit library mentioned in the benchmark. However, the use of modern JavaScript features like arrow functions (`e => e.kodenr === 1000`) and template literals (`var data = []\r\n\r\nfor (let i = 0; i < 5000; ++i) data.push({ kodenr: i })`) suggests that the benchmark is designed to test modern JavaScript capabilities.

**Special JS feature or syntax**

There are no special features or syntax mentioned in the benchmark. The code uses standard JavaScript syntax and does not include any advanced features like async/await, Promises, or modernized `this` context (e.g., using `bind()`).

**Other alternatives**

If you were to reimplement this benchmark using alternative methods, some options could be:

* Using a different data structure, such as a Map or a Set, to store the key-value pairs.
* Implementing a custom filtering function using a loop and conditional statements instead of relying on built-in `some` and `find` methods.
* Using a library like Lodash to provide additional functionality for filtering and iterating over arrays.

Keep in mind that these alternatives might not be as efficient or concise as the original implementation, which takes advantage of modern JavaScript features.

Related benchmarks:

Find vs Some - Hvad er mest effektivt? (version: 0)

Comparing performance of: some 1000 vs find 1000 vs some 2500 vs find 2500 vs Some 5000 vs Find 5000

Created: 4 years ago by: Guest

Jump to the latest result

some 1000

find 1000

some 2500

find 2500

Some 5000

Find 5000

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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