Benchmark: Some vs Find with bigger object

Script Preparation code:

var data = []
var baseObject = {
    prop1: 'prop1',
    prop2: 'prop2',
    prop3: 'prop3',
    prop4: 'prop4',
    prop5: [{
        prop6: 'prop6',
        prop7: 'prop7'
    }, {
        prop8: 'prop8',
        prop9: 'prop9'
    }]
}

for (let i = 0; i < 5000; ++i) data.push({
    ...baseObject,
    index: i,
    username: 'toto'
})
data.push({
    username: 'titi'
})
for (let i = 0; i < 2500; ++i) data.push({
    ...baseObject,
    index: i,
    username: 'toto'
})

Tests:

Find first toto
data.find(e => e.username === 'toto')
Some first toto
data.some(e => e.username === 'toto')
Find first titi
data.find(e => e.username === 'titi')
Some first titi
data.some(e => e.username === 'titi')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Find first toto
Some first toto
Find first titi
Some first titi

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Linux; Android 11) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Mobile Safari/537.36

Browser/OS: Chrome Mobile 93 on Android

View result in a separate tab

Test name	Executions per second
Find first toto	10224602.0 Ops/sec
Some first toto	10236692.0 Ops/sec
Find first titi	1562.4 Ops/sec
Some first titi	1567.1 Ops/sec

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

LLMs can make mistakes. Check important info.

I'll break down the provided benchmark and explain what's being tested.

**Benchmark Overview**

The benchmark is designed to measure the performance of JavaScript's `find` and `some` methods on a large dataset. The test cases use a fictional `data` array with 15,000 elements, where each element has several properties, including an `index`, `username`, and various nested objects.

**Options Compared**

The benchmark compares the performance of three different approaches:

1. **Array.prototype.find()**: Uses the `find()` method to search for an element that meets a certain condition.
2. **Array.prototype.some()**: Uses the `some()` method to search for at least one element that meets a certain condition.

**Pros and Cons**

* **Array.prototype.find():**
	+ Pros:
		- More efficient than `some` when the target element exists in the array (since it returns early).
		- Less memory-intensive since it only iterates over the elements until it finds the match.
	+ Cons:
		- May be slower if the array is very large and no matches are found, as it needs to iterate through all elements.
* **Array.prototype.some():**
	+ Pros:
		- Can be faster for very large arrays where some matches exist, since it can stop iterating early.
		- More intuitive for developers who prefer a "short-circuiting" behavior.
	+ Cons:
		- May be slower when no matches are found, as it needs to iterate through all elements.

**Library and Special JS Feature**

* The benchmark doesn't use any external libraries. However, it does utilize JavaScript's built-in `Array.prototype.find()` and `Array.prototype.some()` methods, which are standard features of the language.
* There are no special JS features or syntaxes used in this benchmark.

**Other Alternatives**

If you want to optimize your own code, here are some alternative approaches:

1. **Use a more efficient data structure**: If the data is too large to fit into memory, consider using a disk-based storage solution like IndexedDB.
2. **Pre-filtering**: Before calling `find()` or `some()`, pre-filter the array to reduce the number of elements that need to be processed.
3. **Use caching**: Cache frequently accessed elements to avoid recalculating them on each iteration.

Keep in mind that these alternatives might introduce additional overhead, and it's essential to profile and benchmark your specific use case to determine the most efficient approach.

Related benchmarks:

Some vs Find with bigger object (version: 0)

Comparing performance of: Find first toto vs Some first toto vs Find first titi vs Some first titi

Created: 3 years ago by: Guest

Jump to the latest result

Find first toto

Some first toto

Find first titi

Some first titi

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):