Benchmark: lodash head vs 0

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js"></script>

Script Preparation code:

var x = [10, 20, 30, 100];
var y = [];

Tests:

Access to not empty first value of array by using lodash head function
_.head(x);
Access to not empty first value of array by using JS syntax x[0]
x[0]

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Access to not empty first value of array by using lodash head function
Access to not empty first value of array by using JS syntax x[0]

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 5 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Browser/OS: Chrome 130 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Access to not empty first value of array by using lodash head function	10750162.0 Ops/sec
Access to not empty first value of array by using JS syntax x[0]	20584838.0 Ops/sec

Autogenerated LLM Summary (model llama3.1:latest, generated 6 months ago):

LLMs can make mistakes. Check important info.

Let's dive into the details of this benchmark.

**What is being tested?**

The test case is comparing two different ways to access the first element of an array in JavaScript:

1. Using the `_.head()` function from the Lodash library (`lodash head function`)
2. Accessing the first element directly using array syntax (`x[0]`)

**Options compared:**

We have two options being compared:

1. **Lodash head function**: This is a utility function provided by the Lodash library, which takes an array as input and returns its first element. The benchmark uses this function with the array `x`.
2. **JavaScript syntax x[0]**: This is the native JavaScript way to access the first element of an array using square bracket notation (`[]`).

**Pros/Cons of each approach:**

1. **Lodash head function**:
	* Pros:
		+ Provides a concise and expressive way to access the first element.
		+ Takes care of edge cases (e.g., handling empty arrays).
	* Cons:
		+ Requires including an external library (Lodash) in your project.
		+ May introduce additional overhead due to the library's size and execution time.
2. **JavaScript syntax x[0]**:
	* Pros:
		+ Native JavaScript feature, so no external dependencies required.
		+ Generally faster than using a library function.
	* Cons:
		+ Less concise than the Lodash head function for simple cases.

**Other considerations:**

1. **Library overhead**: When using the Lodash head function, we need to consider the size and execution time of the entire Lodash library, not just this single function.
2. **Code readability**: While both approaches are relatively straightforward, the Lodash head function might be more readable in certain contexts due to its concise syntax.

**Library:**

The Lodash library is a popular JavaScript utility library that provides a wide range of functions for tasks like data manipulation, array processing, and string handling. In this case, we're using the `_.head()` function from Lodash to access the first element of an array.

**Special JS feature or syntax:**

There are no special JavaScript features or syntax used in this benchmark beyond what's mentioned above (i.e., using square bracket notation (`[]`) to access the first element of an array).

**Alternatives:**

If you don't want to use Lodash, you can also achieve similar results with other libraries like Underscore.js or native JavaScript features. For example:

* You could write your own `head()` function from scratch.
* Use a different library that provides a similar utility function (e.g., Underscore.js's `first()` method).

Keep in mind that the choice of approach ultimately depends on your specific use case, performance requirements, and coding preferences!

Related benchmarks:

lodash head vs 0 (version: 0)

Comparing performance of: Access to not empty first value of array by using lodash head function vs Access to not empty first value of array by using JS syntax x[0]

Created: 3 years ago by: Registered User

Jump to the latest result

Access to not empty first value of array by using lodash head function

Access to not empty first value of array by using JS syntax x[0]

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.1:latest, generated 6 months ago):