Benchmark: Lodash _.first vs array[0] test 2

HTML Preparation code:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.core.js"></script>

Script Preparation code:

var names = ["first", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix", "middle", "last", "suffix"];

Tests:

_.first
const firstName = _.first(names)
JS
const firstName = names[0]

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
_.first
JS

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Browser/OS: Chrome 122 on Windows

View result in a separate tab

Test name	Executions per second
_.first	8298877.0 Ops/sec
JS	22758876.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided JSON data to understand what is being tested and the different approaches compared.

**Benchmark Definition**

The benchmark is defined as a test between two methods: `lodash(_.first(names))` and `names[0]`. The purpose of this benchmark is to compare the performance of these two approaches in extracting the first element from an array named "names".

**Options Compared**

Two options are being compared:

1. **Lodash _.first**: This method uses a library called Lodash, which provides a set of helper functions for common tasks such as string manipulation, array manipulation, and more. In this case, `_.first` is used to extract the first element from an array.
2. **JS (JavaScript)**: This option uses plain JavaScript syntax to access the first element of the array.

**Pros and Cons**

**Lodash _.first**:

* Pros:
	+ Efficient use of Lodash library
	+ Well-tested and optimized function
	+ Can be useful for more complex array manipulation tasks
* Cons:
	+ Requires including an external library, which may add overhead
	+ May not be suitable for very small arrays or specific edge cases

**JS (JavaScript)**:

* Pros:
	+ No additional library needed, making it lightweight and easy to use
	+ Can be easily modified or extended for specific use cases
	+ Works well for most array manipulation tasks
* Cons:
	+ May not be as efficient as `_.first` due to the overhead of dynamic typing and string concatenation
	+ Requires manual handling of array indexing, which can lead to errors

**Other Considerations**

The benchmark also considers other factors such as browser and device platform, which may affect performance. The results are likely skewed by the specific hardware and software configuration used for the test runs.

**Library: Lodash**

Lodash is a popular JavaScript library that provides a set of utility functions for common tasks. In this case, `_.first` is part of the Lodash Core module, which provides basic data manipulation functions.

**Special JS Feature/Syntax**

None mentioned in this benchmark definition.

**Alternative Approaches**

Other possible approaches to extract the first element from an array could include:

1. Using a different library or framework that provides an optimized `first` function.
2. Implementing a custom `first` function using only JavaScript syntax, without relying on Lodash or other libraries.
3. Using a specialized data structure, such as a linked list or queue, to extract the first element more efficiently.

However, these alternatives are not tested in this benchmark and may have different performance characteristics depending on the specific use case.

Related benchmarks:

Lodash _.first vs array[0] test 2 (version: 0)

Comparing performance of: _.first vs JS

Created: 2 years ago by: Guest

Jump to the latest result

_.first

JS

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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