Benchmark: Some vs. Filter vs. Find, 10 vs 10k

Script Preparation code:

var arr = [];
for (var i = 0; i < 100000; i++) {
  arr.push(i)
}

Tests:

Array.some 10
var tempResult = arr.some(i => i === 10)
Array.some 10000
var tempResult = arr.some(i => i === 10000)
Array.filter 10
var tempResult = arr.filter(i => i === 10).length != 0;
Array.filter 10000
var tempResult = arr.filter(i => i === 10000).length != 0;
Array.find 10
var tempResult = arr.find(i => i === 10) != null
Array.find 10000
var tempResult = arr.find(i => i === 10000) != null

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.some 10
Array.some 10000
Array.filter 10
Array.filter 10000
Array.find 10
Array.find 10000

Fastest: N/A

Slowest: N/A

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/113.0

Browser/OS: Firefox 113 on Windows

View result in a separate tab

Test name	Executions per second
Array.some 10	64155344.0 Ops/sec
Array.some 10000	30304.3 Ops/sec
Array.filter 10	3189.5 Ops/sec
Array.filter 10000	3215.3 Ops/sec
Array.find 10	80433496.0 Ops/sec
Array.find 10000	36112.9 Ops/sec

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

LLMs can make mistakes. Check important info.

I'll break down the provided JSON benchmark and explain what's being tested, compared options, pros/cons of those approaches, and other considerations.

**Benchmark Overview**

The benchmark is designed to compare the performance of three methods: `Array.some()`, `Array.filter()`, and `Array.find()` on an array of 100,000 elements. The array is initialized with numbers from 0 to 99,999 using a script preparation code.

**Test Cases**

There are six test cases:

1. `Array.some 10`: Tests the performance of `Array.some()` when filtering an array for a specific value (10).
2. `Array.some 10000`: Tests the performance of `Array.some()` when filtering an array for a specific value (10,000).
3. `Array.filter 10`: Tests the performance of `Array.filter()` when filtering an array for a specific value (10).
4. `Array.filter 10000`: Tests the performance of `Array.filter()` when filtering an array for a specific value (10,000).
5. `Array.find 10`: Tests the performance of `Array.find()` when finding an element in an array with a specific value (10).
6. `Array.find 10000`: Tests the performance of `Array.find()` when finding an element in an array with a specific value (10,000).

**Options Compared**

The benchmark compares the performance of three methods:

* `Array.some()`: Tests if any element in the array matches the specified condition.
* `Array.filter()`: Returns a new array with all elements that pass the test implemented by the provided function.
* `Array.find()`: Returns the value of the first element in the array that satisfies the provided testing function.

**Pros/Cons**

Here's a brief summary of each method:

1. **Array.some()**:
	* Pros: Efficient for small arrays, concise syntax, and easy to understand.
	* Cons: May be slower for large arrays due to the `some()` method iterating over all elements before returning.
2. **Array.filter()**:
	* Pros: More flexible than `some()`, can be used to create a new array with filtered elements, and has better performance for large arrays.
	* Cons: Creates an additional array, which may not be desirable in memory-intensive scenarios.
3. **Array.find()**:
	* Pros: Efficient for finding the first matching element, concise syntax, and easy to understand.
	* Cons: May return `undefined` if no elements match, so it's essential to check the returned value.

**Other Considerations**

When choosing between these methods:

* If you need to test whether any element in the array matches a condition, `Array.some()` might be the best choice. However, for larger arrays, consider using `Array.filter()`.
* For creating a new array with filtered elements, use `Array.filter()`. Be mindful of memory usage if working with large arrays.
* When finding the first matching element, `Array.find()` is an excellent option due to its concise syntax and efficient performance.

**Alternatives**

If you need alternative methods:

1. **`Array.prototype.includes()`**: Similar to `Array.some()`, but returns a boolean value instead of iterating over elements.
2. **`Array.prototype.indexOf()``: Returns the index of the first occurrence of the specified element, or -1 if not found. Can be used with `Array.prototype.map()` and filtering for more complex scenarios.

Keep in mind that these alternatives might have varying performance characteristics depending on your specific use case.

I hope this explanation has been helpful!

Related benchmarks:

Some vs. Filter vs. Find, 10 vs 10k (version: 0)

Comparing performance of: Array.some 10 vs Array.some 10000 vs Array.filter 10 vs Array.filter 10000 vs Array.find 10 vs Array.find 10000

Created: one year ago by: Guest

Jump to the latest result

Array.some 10

Array.some 10000

Array.filter 10

Array.filter 10000

Array.find 10

Array.find 10000

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):