Benchmark: array object find vs _.find

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 = [{test:'hello'}, {test:'a'}, {test:'bc'}]; var b = a.find(item => item.test === 'bc');
_.find
var a = [{test:'hello'}, {test:'a'}, {test:'bc'}]; var b = _.find(a, item => item.test === '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 break down what's being tested in the provided JSON benchmark.

**Overview**

The benchmark compares two approaches to finding an element in an array: using the traditional `concat()` method and the new ES6 spread operator (`...`). The benchmark is designed to measure the performance difference between these two methods.

**Options Compared**

Two options are being compared:

1. **ES6 Spread Operator (new syntax)**: Using the spread operator (`...`) to create a new array with a filtered subset of elements.
2. **Traditional `concat()` Method**: Using the `concat()` method to concatenate an empty array with a filtered subset of elements.

**Pros and Cons**

Both approaches have their trade-offs:

* **ES6 Spread Operator (new syntax)**:
	+ Pros: More concise, efficient, and modern syntax.
	+ Cons: May not be supported in older browsers or environments.
* **Traditional `concat()` Method**:
	+ Pros: Widely supported across browsers and environments, easy to implement.
	+ Cons: Less concise and may have performance overhead due to the repeated concatenation operation.

**Library and Purpose**

The benchmark uses Lodash.js, a popular utility library for JavaScript. In this case, it's used for the `_.find()` method, which is a convenience function that wraps around the `Array.prototype.find()` method. The `_.find()` method takes an array and a callback function as arguments, returning the first element in the array that satisfies the condition specified by the callback.

**Special JS Features or Syntax**

There are no special JavaScript features or syntaxes mentioned in this benchmark. Both approaches use standard JavaScript syntax.

**Other Alternatives**

Other alternatives for finding elements in an array include:

* Using `Array.prototype.filter()` and then accessing the resulting array
* Using a custom loop with indexing to find the desired element

However, these alternatives are not being tested in this benchmark.

I hope this explanation helps! Let me know if you have any further questions.

Related benchmarks:

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

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

Comparing performance of: array find vs _.find

Created: 7 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):