Benchmark: _.isEmpty vs 3 array.length 2

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.min.js"></script>

Script Preparation code:

window.obj = {
a: [],
b: [{id: '4'},{id: '5'},{id: '6'}],
c: [{id: '7'},{id: '8'},{id: '9'}],
};

Tests:

_.isEmpty
_.isEmpty(window.obj);
Object.keys().length
window.obj.a.length === 0 && window.obj.b.length === 0 && window.obj.c.length === 0;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
_.isEmpty
Object.keys().length

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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**Benchmark Overview**

The benchmark tests two different approaches to check if an array is empty: using Lodash's `_.isEmpty()` function and using the `length` property of arrays. The benchmark is designed to compare the performance of these two approaches.

**Options Compared**

1. **Lodash's `_isEmpty()` function**: This option uses the popular utility library Lodash to check if an array is empty. It provides a concise and expressive way to perform common data manipulation tasks.
2. **Array length property (`length`)**: This option checks if the length of the array is zero, which effectively indicates that the array is empty.

**Pros and Cons**

1. **Lodash's `_isEmpty()` function**:
	* Pros: Concise code, easy to read and write, well-tested and maintained.
	* Cons: Adds an external dependency (Lodash), may introduce overhead due to library loading and initialization.
2. **Array length property (`length`)**:
	* Pros: Lightweight, no external dependencies, straightforward and efficient.
	* Cons: Requires explicit checks for zero length, may not be as concise or readable.

**Other Considerations**

1. **Library Usage**: The benchmark uses Lodash, which is a widely used and well-respected utility library. However, it's essential to consider the impact of adding external dependencies on performance.
2. **Browser Support**: Both options should work in most modern browsers, but it's crucial to test for specific browser versions and platforms.

**Special JS Features/Syntax**

This benchmark does not use any special JavaScript features or syntax that would affect its performance or execution.

**Alternatives**

1. **Other array length checks**: Instead of using `length`, you could also check if the array is empty using `some()` and a callback function that returns false for each element.
2. **Custom implementation**: You could implement your own custom function to check if an array is empty, which might provide better performance or customization options.

**Benchmark Preparation Code Explanation**

The Script Preparation Code sets up a window object (`window.obj`) with three arrays: `a`, `b`, and `c`. Array `b` has three elements, while arrays `a` and `c` are empty. The Html Preparation Code includes the Lodash library for use in the benchmark.

**Individual Test Cases**

The first test case measures the performance of Lodash's `_isEmpty()` function on an array with three non-empty elements. The second test case measures the performance of checking if the length of the object is zero using `Object.keys().length`.

Related benchmarks:

_.isEmpty vs 3 array.length 2 (version: 0)

Comparing performance of: _.isEmpty vs Object.keys().length

Created: 3 years ago by: Guest

Jump to the latest result

_.isEmpty

Object.keys().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):