Benchmark: Find vs some lodash3

HTML Preparation code:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.core.js"></script>

Script Preparation code:

var a = ['hello', 'a', 'bc'];

Tests:

Find
var c = 0; var b = a.indexOf('bc'); if(b < 0) c++;
Some
var c = 0; var b = _.some(a, item => item === 'bc'); if(b) c++

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:

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

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Let's dive into the world of JavaScript microbenchmarks.

**What is tested?**

MeasureThat.net tests two different approaches to find an element in an array: the built-in `indexOf()` method and the Lodash library's `some()` function.

The test case "Find" uses the `indexOf()` method, which searches for a specific value in an array and returns its index if found. If not found, it returns -1. The test code:

```javascript
var c = 0;
var b = a.indexOf('bc');
if (b < 0) c++;
```

The test case "Some" uses the Lodash library's `some()` function, which tests each element in an array to see if it passes a certain condition. In this case, the condition is checking if the item is equal to `'bc'`. The test code:

```javascript
var c = 0;
var b = _.some(a, item => item === 'bc');
if (b) c++;
```

**Options compared**

The two approaches have different pros and cons:

* `indexOf()` method:
	+ Pros: native JavaScript function, fast, and widely supported.
	+ Cons: can be slower for large arrays due to the search algorithm.
* Lodash's `some()` function:
	+ Pros: flexible, easy to use, and supports more complex conditions.
	+ Cons: adds an extra dependency (the Lodash library), which might slow down the test.

**Library used**

The Lodash library is used in the "Some" test case. Lodash is a popular utility library for JavaScript that provides a lot of useful functions for tasks like array manipulation, string manipulation, and more. The `some()` function is one of these utilities, which allows you to test each element in an array against a condition.

**Special JS features/syntax**

There are no special JS features or syntax used in these tests. They only use standard JavaScript syntax and built-in functions.

**Other alternatives**

If you want to avoid using the Lodash library, you could implement your own `some()` function using a loop:

```javascript
function some(arr, callback) {
  for (var i = 0; i < arr.length; i++) {
    if (callback(arr[i])) return true;
  }
  return false;
}

// usage:
var b = some(a, item => item === 'bc');
```

Alternatively, you could use a more modern approach with `Array.prototype.find()` and `Array.prototype.includes()`:

```javascript
var c = 0;
var b = a.find(item => item === 'bc') !== undefined;
if (b) c++;
```

However, these alternatives might not be as widely supported or optimized for performance as the original code.

Related benchmarks:

Find vs some lodash3 (version: 0)

Comparing performance of: Find vs Some

Created: 6 years ago by: Guest

Jump to the latest result

Find

Some

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):