Benchmark: array.find and boolean cast or array.some

Tests:

array.find and boolean cast
const array = [1,2,3,4,5,6,7,8,9] const found = !!array.find(x => x === 7)
array.some
const array = [1,2,3,4,5,6,7,8,9] const found = array.some(x => x === 7)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
array.find and boolean cast
array.some

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 break down the provided benchmark and its test cases to understand what's being tested.

**Benchmark Overview**

MeasureThat.net is a website that allows users to create and run JavaScript microbenchmarks. The provided benchmark definition includes two individual test cases: "array.find and boolean cast" and "array.some". These test cases aim to measure the performance of different approaches for searching an array in JavaScript.

**What's being tested?**

The primary goal is to compare the performance of three approaches:

1. **`find()` method with a boolean cast**: This approach uses the `find()` method, which returns the first element that satisfies the provided condition. The result is then casted to a boolean value using the `!!` operator.
2. **`some()` method**: This approach uses the `some()` method, which returns a boolean value indicating whether at least one element in the array satisfies the provided condition.

**Options compared**

The two test cases compare the performance of these two approaches:

*   Pros and cons:
    *   `find()` with boolean cast:
        *   **Pros**: This approach is more explicit about what it's doing, as it explicitly searches for a specific element. It also provides better error handling, as it returns `undefined` if no element is found.
        *   **Cons**: This approach can be slower than `some()`, especially for large arrays, because it needs to iterate through the entire array until it finds the desired element or reaches the end.
    *   `some()` method:
        *   **Pros**: The `some()` method is generally faster and more efficient than `find()` with a boolean cast. It stops iterating as soon as it finds an element that satisfies the condition, making it suitable for large arrays.
        *   **Cons**: This approach can be less explicit about what's happening, as the condition is applied to each element without necessarily finding the exact match.

**Library usage**

In this benchmark, the `find()` and `some()` methods are native JavaScript functions that don't require any external libraries. They're built-in functions that operate on arrays.

No special JavaScript features or syntax are being tested in these benchmarks. The focus is solely on comparing the performance of different approaches for searching an array.

**Alternatives**

If you were to modify this benchmark, you might consider adding other test cases to evaluate performance under different scenarios:

*   Using `find()` with a callback function
*   Using `some()` with a callback function
*   Searching arrays in reverse order
*   Searching multi-dimensional arrays

By expanding the test cases, you can gain a deeper understanding of how JavaScript's array methods behave under various conditions and potentially identify performance hotspots or areas for optimization.

This explanation should provide enough insight into what's being tested on MeasureThat.net. If you have any specific questions or need further clarification, feel free to ask!

Latest run results:

Run details: (Test run date: 5 months ago)

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_5_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.5 Mobile/15E148 Safari/604.1

Browser/OS: Mobile Safari 17 on iOS 17.5.1

View result in a separate tab

Test name	Executions per second
array.find and boolean cast	81485224.0 Ops/sec
array.some	55773580.0 Ops/sec

Related benchmarks:

array.find and boolean cast or array.some (version: 0)

Comparing performance of: array.find and boolean cast vs array.some

Created: 5 months ago by: Guest

Jump to the latest result

array.find and boolean cast

array.some

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):