Benchmark: array find vs _.find 4123123

HTML Preparation code:

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

Tests:

array find
var a = ['hello', 'a', 'bc']; var b = a.find(item => item === 'bc');
_.find
var a = ['hello', 'a', 'bc']; var b = _.find(a, { item: 'bc' });

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
array find
_.find

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 and analyze the provided benchmark definition, test cases, and latest benchmark result.

**Benchmark Definition:**

The benchmark measures the performance difference between using the traditional `concat()` method and the new ES6 spread operator (`...`) for merging arrays. The goal is to determine which approach is faster.

**Options Compared:**

Two options are compared:

1. **Traditional Concat() Method**: This involves concatenating two arrays using the `+` operator or the `concat()` method.
2. **ES6 Spread Operator (+)**: This uses the spread operator (`...`) to merge two arrays.

**Pros and Cons of Each Approach:**

* **Traditional Concat() Method:**
	+ Pros:
		- Wide browser support, as it's a standard JavaScript method.
		- Easy to understand and implement.
	+ Cons:
		- Can be slower due to the overhead of creating new arrays and handling null/undefined values.
		- May lead to memory allocation issues if not properly handled.
* **ES6 Spread Operator (+):**
	+ Pros:
		- Faster execution, as it's a native operator in modern browsers.
		- More concise and expressive code.
	+ Cons:
		- Requires support for the ES6 specification, which might not be available in older browsers.

**Library Used:**

The benchmark uses the Lodash library (`lodash.core.js`) to provide the `_.find()` method. Lodash is a popular utility library that provides various functions for working with arrays and objects.

**Special JS Feature/Syntax:**

There's no specific JavaScript feature or syntax used in this benchmark, as it primarily focuses on comparing two basic methods for merging arrays.

**Other Alternatives:**

If you're interested in alternative approaches for merging arrays, consider the following options:

1. **Array.prototype.push()**: This involves using `push()` to add elements from another array to the current array.
2. **Array.prototype.set()**: This is a newer method (introduced in ECMAScript 2017) that allows setting values in an array.

Here's some sample code for each alternative:
```javascript
// Array.prototype.push()
const arr1 = [];
const arr2 = ['a', 'b'];
arr1.push(...arr2); // equivalent to concat() or spread operator

// Array.prototype.set()
const arr3 = new Array(10);
arr3.set([0, 1, 2], [0, 1, 2]); // equivalent to push() with spread operator
```
Keep in mind that these alternatives might have different performance characteristics and may not be suitable for all use cases.

I hope this explanation helps you understand the JavaScript microbenchmark and its underlying mechanics!

Related benchmarks:

array find vs _.find 4123123 (version: 0)

Compare the new ES6 spread operator with the traditional concat() method

Comparing performance of: array find vs _.find

Created: 5 years ago by: Guest

Jump to the latest result

array find

_.find

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):