Benchmark: isEmpty vs length obj

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>

Script Preparation code:

// array of objects
window.foo3 = [{ a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 2 } } }, { a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 2 } } }, { a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 2 } } }];

Tests:

isEmpty array of objects
_.isEmpty(window.foo3);
length array of objects
window.foo3.length === 0;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
isEmpty array of objects
length array of objects

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one month ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser/OS: Chrome 133 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
isEmpty array of objects	49480576.0 Ops/sec
length array of objects	251026944.0 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated 6 months ago):

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested.

**Benchmark Definition JSON**

The benchmark is defined by two test cases:

1. `_.isEmpty(window.foo3);` - This test case checks if the `foo3` array is empty using the Lodash library's `isEmpty()` function.
2. `window.foo3.length === 0;` - This test case checks if the length of the `foo3` array is zero.

**Options Compared**

The two options being compared are:

1. Using a dedicated library (Lodash) to check if an object or array is empty.
2. Implementing a custom solution to check if an object or array is empty.

**Pros and Cons of Each Approach**

**Option 1: Using a Dedicated Library**

Pros:

* Faster execution time, as the library has already optimized the implementation for performance.
* Less chance of human error, as the library's implementation is reviewed by the developers.
* Easier to maintain, as the library's implementation can be updated when new versions are released.

Cons:

* Additional dependency on the Lodash library, which may add overhead in terms of download size and complexity.
* May not be suitable for all use cases, such as performance-critical code or situations where a custom solution is required.

**Option 2: Implementing a Custom Solution**

Pros:

* No additional dependency on a library, reducing overhead in terms of download size and complexity.
* Can be tailored to specific requirements and performance needs.

Cons:

* May introduce human error into the implementation, leading to slower execution times or incorrect results.
* Requires more development effort to implement and maintain a custom solution.

**Library: Lodash**

Lodash is a popular JavaScript library that provides a wide range of utility functions for various tasks, including array manipulation, object manipulation, and string manipulation. The `isEmpty()` function in Lodash checks if an object or array is empty by verifying its size or properties.

**Special JS Feature/Syntax**

There are no special JavaScript features or syntax mentioned in the benchmark definition JSON. However, it's worth noting that some modern browsers may use optional features like `const` and `let` to declare variables, which can affect performance.

**Alternative Solutions**

Other alternatives for checking if an object or array is empty include:

1. Using a simple `if (object.length === 0)` statement.
2. Implementing a custom solution using recursion or iteration.
3. Using other libraries like Immutable.js or Ramda.

However, the Lodash library's implementation of `isEmpty()` function is likely to be the most efficient and reliable option for this specific benchmark.

Related benchmarks:

isEmpty vs length obj (version: 0)

Comparing performance of: isEmpty array of objects vs length array of objects

Created: 3 years ago by: Guest

Jump to the latest result

isEmpty array of objects

length array of objects

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 6 months ago):