Benchmark: Some vs !!Find - MeasureThat.net

Script Preparation code:

var data = []

for (let i = 0; i < 5000; ++i) data.push({ username: 'toto' })
data.push({ username: 'titi' })
for (let i = 0; i < 2500; ++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: 3 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36 Edg/144.0.0.0

Browser/OS: Chrome 144 on Windows

View result in a separate tab

Test name	Executions per second
Find	298142.7 Ops/sec
Some	298389.4 Ops/sec

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

LLMs can make mistakes. Check important info.

I'll explain the provided benchmark and its components.

**Benchmark Definition**

The benchmark definition is represented by a JSON object that contains three main properties:

*   **Script Preparation Code**: This property specifies the code that will be executed once before each test case. In this example, it's a JavaScript snippet that creates an array `data` with two types of objects: `{ username: 'toto' }` and `{ username: 'titi' }`. The code also includes a nested loop to populate the array with more objects.
*   **Html Preparation Code**: This property is empty in this benchmark definition, meaning there's no HTML code to prepare before each test case.

**Individual Test Cases**

The benchmark consists of two individual test cases:

1.  `!!data.find(e => e.username === 'titi')`
    *   **Test Name:** Find
    *   This test case uses the `find` method on the `data` array, which returns the first element that satisfies the provided condition (`e => e.username === 'titi'`). The `!!` operator is applied to the result of the `find` method.
2.  `data.some(e => e.username === 'titi')`
    *   **Test Name:** Some
    *   This test case uses the `some` method on the `data` array, which returns a boolean indicating whether at least one element in the array satisfies the provided condition (`e => e.username === 'titi'`). The `!!` operator is not applied to this result.

**Libraries and Special JavaScript Features**

There's no explicit library used in these test cases. However, the use of `find` and `some` methods implies that the benchmark requires modern JavaScript features, specifically:

*   Arrow functions (`e => e.username === 'titi'`)
*   The spread operator (`data.push({ username: 'toto' })`)

**Approach Comparison**

The two test cases compare the performance of the `find` and `some` methods on the same array. The `find` method returns a single element, while the `some` method returns a boolean value.

**Pros and Cons of Different Approaches**

*   **Find Method:**
    *   Pros:
        +   Returns a specific element that satisfies the condition.
        +   Can be more efficient if only one matching element exists in the array.
    *   Cons:
        +   May throw an error if no elements satisfy the condition.
        +   Has higher overhead due to the return value and potential array searching.
*   **Some Method:**
    *   Pros:
        +   Returns a boolean value, which can be more convenient for certain use cases.
        +   Can be faster since it only checks for existence without returning an actual element.
    *   Cons:
        +   May not be suitable when a specific value is required.
        +   Can be slower due to the potential overhead of checking all elements in the array.

**Other Considerations**

The benchmark's results can provide insights into:

*   The performance difference between `find` and `some` methods for specific use cases.
*   The impact of modern JavaScript features, such as arrow functions and the spread operator, on performance.

If you're interested in exploring alternative approaches or modifying this benchmark to test different scenarios, consider experimenting with different array operations, data structures, or optimization techniques.

Related benchmarks:

Some vs !!Find (version: 0)

Comparing performance of: Find vs Some

Created: 5 years 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):