Benchmark: Some vs. Filter - MeasureThat.net

Script Preparation code:

var hasZero = [];
var withoutZero = [];
for (var i = 0; i < 10000; i++) {
  hasZero.push(Math.floor(Math.random() * 1000));
  withoutZero.push(Math.floor(Math.random() * 1000) + 1)
}

Tests:

Array.some
for (var i = 0; i < 100; i++) { var tempResult = !!Math.round(Math.random()) ? hasZero.some(v => v === 0) : withoutZero.some(v => v === 0); }
Array.filter
for (var i = 0; i < 100; i++) { var tempResult = !!Math.round(Math.random()) ? hasZero.filter(v => v === 0) : withoutZero.filter(v => v === 0); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.some
Array.filter

Fastest: N/A

Slowest: N/A

Latest run results:

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

LLMs can make mistakes. Check important info.

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

**Benchmark Overview**

The test case compares two approaches: using `Array.prototype.some()` vs `Array.prototype.filter()`. Both methods are used to check if at least one element in an array meets a certain condition (in this case, being equal to 0).

**Script Preparation Code**

The script preparation code generates two arrays of random numbers: `hasZero` and `withoutZero`. The size of these arrays is 10,000 elements. The purpose of generating these arrays is to provide a controlled environment for the test case.

```javascript
for (var i = 0; i < 10000; i++) {
    hasZero.push(Math.floor(Math.random() * 1000));
    withoutZero.push(Math.floor(Math.random() * 1000) + 1);
}
```

**Html Preparation Code**

There is no HTML preparation code provided, which means that the test case only focuses on JavaScript performance.

**Individual Test Cases**

The two test cases are:

1. `Array.some`
2. `Array.filter`

Both test cases have the same basic structure:

```javascript
for (var i = 0; i < 100; i++) {
    var tempResult = 
        // Either using some() or filter()
}
```

**Comparison of Approaches**

The two approaches being compared are:

* `Array.prototype.some()`: This method returns a boolean value indicating whether at least one element in the array meets the provided condition. It iterates over the elements, as soon as it finds an element that satisfies the condition, it stops iterating.
* `Array.prototype.filter()`: This method creates a new array with all elements that satisfy the provided condition.

**Pros and Cons of Each Approach**

* `Array.prototype.some()`:
	+ Pros:
		- Stops iterating as soon as it finds the first matching element, which can lead to faster performance for large arrays.
		- Simple to implement.
	+ Cons:
		- Returns a boolean value, which may not be immediately useful in all cases.
* `Array.prototype.filter()`:
	+ Pros:
		- Creates a new array with matching elements, which can be more convenient than working with the original array.
	+ Cons:
		- Iterates over the entire array to find matching elements, which can lead to slower performance for large arrays.

**Library and Purpose**

There is no library being used in this benchmark. The `Array.prototype.some()` and `Array.prototype.filter()` methods are built-in JavaScript methods.

**Special JS Feature or Syntax**

None mentioned in this benchmark.

**Other Alternatives**

If you're looking for alternative ways to check if at least one element meets a condition, you could consider using:

* `some()`: As mentioned earlier, `some()` is similar to `filter()` but returns a boolean value.
* `every()`: This method returns a boolean value indicating whether all elements in the array meet the provided condition. If you want to check if at least one element meets the condition, you could use `some()` or invert the result of `every()` using `!`.
* Custom loops: You could write a custom loop to iterate over the array and check each element individually.

Keep in mind that these alternatives may not be as efficient as using built-in methods like `some()` and `filter()`.

Related benchmarks:

Some vs. Filter (version: 0)

Comparing performance of: Array.some vs Array.filter

Created: 8 years ago by: Guest

Jump to the latest result

Array.some

Array.filter

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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