Benchmark: Some vs Find2 - MeasureThat.net

Script Preparation code:

var data = []

for (let i = 0; i < 100; ++i) data.push({
    username: 'toto'
})
for (let i = 0; i < 10; ++i) data.push({
    username: 'titi'
})
for (let i = 0; i < 100; ++i) data.push({
    username: 'toto'
})

Tests:

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

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Find
Some

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:130.0) Gecko/20100101 Firefox/130.0

Browser/OS: Firefox 130 on Ubuntu

View result in a separate tab

Test name	Executions per second
Find	2678966.0 Ops/sec
Some	2360549.0 Ops/sec

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

LLMs can make mistakes. Check important info.

I'll break down the provided JSON and explain what's being tested, compared, and other considerations.

**Benchmark Definition**
The benchmark is created by defining two test cases: `Find` and `Some`. The `Script Preparation Code` generates an array of objects with different usernames (`toto`, `titi`) to be used for testing. There is no HTML preparation code provided.

**What's being tested?**

The two test cases are comparing the performance of `Array.prototype.find()` and `Array.prototype.some()` methods, respectively.

*   **`Find()`**: This method returns the first element in an array that satisfies a condition. In this case, it will return the first object with `username === 'titi'`.
*   **`Some()`**: This method returns `true` if at least one element in an array satisfies a condition. It will return `true` as soon as it finds an object with `username === 'titi'`.

**Comparison of options**

The comparison is between these two methods:

| Method        | Condition              |
|---------------|-------------------------|
| `Find()`       | Returns the first element that meets the condition  |
| `Some()`       | Returns true if at least one element meets the condition |

Pros and Cons:

*   **`Find()`**:
    *   Pros: Efficient for finding a single matching element. Can be used when you're sure there's only one match.
    *   Cons: Can return `undefined` if no elements match, which might lead to errors in some cases.
*   **`Some()`**:
    *   Pros: More flexible and efficient than checking every element individually using a loop. Returns as soon as it finds a match.
    *   Cons: May return true even if there are no matches, which can be misleading depending on the context.

**Library usage**

There is no explicit library used in this benchmark. However, `Array.prototype.find()` and `Array.prototype.some()` are built-in JavaScript methods that work on arrays.

**Special JS feature or syntax**
This benchmark does not include any special JavaScript features or syntax beyond what's required for these two methods to work (i.e., JavaScript 5.x or later).

**Other alternatives**

Alternatives to using `find()` and `some()` could be:

*   Looping through the array manually:
    ```javascript
for (let i = 0; i < data.length; i++) {
    if (data[i].username === 'titi') {
        // found a match, exit loop or process further
    }
}
```
*   Using `Array.prototype.every()` to check for no matches and then negate the result:
    ```javascript
!data.some(e => e.username === 'titi')
```
Keep in mind that these alternatives are generally less efficient than using built-in methods like `find()` and `some()`.

Related benchmarks:

Some vs Find2 (version: 0)

Comparing performance of: Find vs Some

Created: one year ago by: Guest

Jump to the latest result

Find

Some

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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