Benchmark: _.isEmpty vs Array.length new

HTML Preparation code:

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

Script Preparation code:

window.arr = [];

Tests:

_.isEmpty
_.isEmpty(window.arr);
Array.length
window.arr.length === 0;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
_.isEmpty
Array.length

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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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 to understand what is being tested.

**Benchmark Definition**
The benchmark defines two test cases: `_.isEmpty` and `Array.length`. The first test case uses the Lodash library, specifically the `_isEmpty` function. The second test case directly accesses the `length` property of an empty array (`window.arr`).

**Options Compared**
The benchmark compares the performance of two approaches:

1. Using the `_.isEmpty` function from the Lodash library.
2. Directly checking if an array is empty using the `length` property.

**Pros and Cons**

* **_.isEmpty**:
	+ Pros: Encapsulates the logic to check for emptiness in a reusable and maintainable way, thanks to the Lodash library. This approach is also more explicit about the intent of the code.
	+ Cons: May introduce an additional overhead due to the use of a third-party library. Additionally, if not properly optimized, the function call might be slower than a simple array check.
* **Array.length**:
	+ Pros: Directly checks the length property of the array, which is usually a simple and fast operation.
	+ Cons: This approach requires knowing that an empty array has a `length` property equal to 0. If the array is not initialized or has a different structure (e.g., `undefined`), this check might fail.

**Library: Lodash**
The `_isEmpty` function from Lodash takes an array as an argument and returns a boolean value indicating whether the array is empty. This library provides a convenient way to perform common operations, such as checking for emptiness in arrays or objects.

**Special JS Feature/Syntax**
There is no special JavaScript feature or syntax used in this benchmark. The code uses standard JavaScript syntax and conventions.

**Other Alternatives**

If you want to implement the `_.isEmpty` functionality without using Lodash, you could create a simple function that checks if an array has at least one element:
```javascript
function isEmpty(arr) {
  return arr.length === 0;
}
```
Alternatively, you could use other libraries or frameworks that provide similar functionality.

**Benchmark Preparation Code**
The provided `Script Preparation Code` sets up the environment by creating an empty array on the global object (`window.arr = [];`). The `Html Preparation Code` includes a script tag to load the Lodash library.

Keep in mind that this benchmark is just one example, and there are many other approaches and variations to test different performance scenarios.

Related benchmarks:

_.isEmpty vs Array.length new (version: 0)

Comparing performance of: _.isEmpty vs Array.length

Created: 3 years ago by: Guest

Jump to the latest result

_.isEmpty

Array.length

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):