Benchmark: Several Some vs One Find

Script Preparation code:

var arr = [{
    type: 'This Thing'
}, {
    type: 'Something Else'
}];
var arr2 = [{
    type: 'SomethingElse'
}, {
    type: 'Something Else'
}]

function _find(items) {
    let hasThisThing = false;
    let hasSomethingElse = false;

    return arr.find(item => {
        const isThisThing = item.type === 'This Thing';
        hasThisThing = hasThisThing || isThisThing;
        hasSomethingElse = hasSomethingElse || !isThisThing;

        return hasThisThing && hasSomethingElse;
    });
}

function _some(items) {
    let hasThisThing = arr.some(item => item.type === 'This Thing');
  	let hasSomethingElse;
    if (hasThisThing) {
        hasSomethingElse = arr.some(item => item.type !== 'This Thing');
    }

    return hasThisThing && hasSomethingElse;
}

Tests:

Find1
_find(arr)
Find2
_find(arr2)
Some1
_some(arr)
Some2
_some(arr2)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Find1
Find2
Some1
Some2

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.54 Safari/537.36

Browser/OS: Chrome 95 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Find1	3545240.2 Ops/sec
Find2	3544823.2 Ops/sec
Some1	3106454.2 Ops/sec
Some2	3068843.8 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested, compared, and some pros/cons of different approaches.

**Benchmark Overview**

The benchmark is designed to measure the performance of two JavaScript functions: `_find` and `_some`. Both functions are used to search for specific values within arrays. The test cases cover four scenarios:

1. Finding a value in an array (`_find(arr)` and `_find(arr2)`)
2. Searching for multiple values in an array using `some` method (`_some(arr)` and `_some(arr2)`)

**Script Preparation Code**

The script preparation code defines two arrays, `arr` and `arr2`, each containing objects with a `type` property. The `type` properties are used to simulate the search conditions.

```javascript
var arr = [{ type: 'This Thing' }, { type: 'Something Else' }];
var arr2 = [{ type: 'SomethingElse' }, { type: 'Something Else' }];
```

**Function Implementations**

The `_find` and `_some` functions are implemented as follows:

1. `_find` function:
   ```javascript
function _find(items) {
    let hasThisThing = false;
    let hasSomethingElse = false;

return arr.find(item => {
        const isThisThing = item.type === 'This Thing';
        hasThisThing = hasThisThing || isThisThing;
        hasSomethingElse = hasSomethingElse || !isThisThing;

return hasThisThing && hasSomethingElse;
    });
}
```
   This function uses the `find()` method to search for an object with a `type` property equal to `'This Thing'`. It also checks if another value (`'Something Else'`) is present in the array.

2. `_some` function:
   ```javascript
function _some(items) {
    let hasThisThing = arr.some(item => item.type === 'This Thing');
    let hasSomethingElse;
    if (hasThisThing) {
        hasSomethingElse = arr.some(item => item.type !== 'This Thing');
    }

return hasThisThing && hasSomethingElse;
}
```
   This function uses the `some()` method to check if at least one object in the array has a `type` property equal to `'This Thing'`. If such an object is found, it also checks if another value (`'Something Else'`) is present in the array.

**Comparison and Options**

The benchmark compares the performance of these two approaches for each test case:

1. Finding a value in an array: `_find(arr)` vs `arr.find()`.
2. Searching for multiple values in an array using `some` method: `_some(arr)` vs `arr.some()`.

Pros/Cons of different approaches:

* `_find(arr)` and `arr.find()`: Both methods use the `find()` method, but `_find(arr)` modifies the `hasThisThing` and `hasSomethingElse` variables, which can be considered as a optimization. On the other hand, using `arr.find()` directly might be more readable.
* `_some(arr)` and `arr.some()`: This approach is less common and not as efficient as using `find()` method directly.

Other considerations:

* Using `some()` method for finding multiple values in an array can lead to false positives if the condition is not correctly implemented. In this case, it's used to check if both values are present.
* The `hasThisThing` variable is initialized before the loop, but its value is updated inside the loop using logical OR (`||`). This might be considered as a potential optimization, but it can also lead to unexpected behavior if not correctly understood.

**Library and Special JS Features**

There are no explicit libraries used in this benchmark. However, `Array.prototype.find()` and `Array.prototype.some()` methods are part of the JavaScript standard library.

No special JavaScript features or syntax are used in this benchmark.

**Alternatives**

If you need to optimize the search for values in arrays, here are some alternatives:

* Using a custom loop: You can write a simple loop to iterate over the array and check each value against the condition.
* Using a data structure: Depending on the requirements, using a data structure like a hash table or a tree might be more efficient than searching an array.
* Parallelization: If you need to search multiple arrays in parallel, you can use a library or framework that supports parallel processing.

Related benchmarks:

Several Some vs One Find (version: 4)

Comparing performance of: Find1 vs Find2 vs Some1 vs Some2

Created: 3 years ago by: Registered User

Jump to the latest result

Find1

Find2

Some1

Some2

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):