Benchmark: Lodash vs. Set Difference Method

HTML Preparation code:

<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js"></script>

AخA
 
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js"></script>

Script Preparation code:

var a = [1, 2, 3, 4, 5]
var b = [3, 4, 5, 6, 7]

 
var a = [1, 2, 3, 4, 5]var b = [3, 4, 5, 6, 7]

Tests:

Lodash
var c = _.difference(a, b)
var c = _.difference(a, b)

Set

 const set1 = new Set(a);
  const set2 = new Set(b);

  const unionSet = [...a, ...b];

  const uniqueNumbers = unionSet.filter(
    (num) => !(set1.has(num) && set2.has(num))
  );

​x
 
 const set1 = new Set(a);  const set2 = new Set(b);​  const unionSet = [...a, ...b];​  const uniqueNumbers = unionSet.filter(    (num) => !(set1.has(num) && set2.has(num))  );

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Experimental features:

Memory measurements supported only in Chrome.
For precise memory measurements Chrome must be launched with --enable-precise-memory-info flag.
More information: Monitoring JavaScript Memory

Test case name	Result
Lodash
Set

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
Lodash	7676334.0 Ops/sec
Set	4519926.5 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated 5 months ago):

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

Benchmark Definition

The benchmark tests two approaches to calculate the set difference between two arrays: using the Lodash library and using the native Set data structure in JavaScript.

Options Compared

The options being compared are:

Lodash: The difference() function from the Lodash library is used to calculate the set difference.
Native Set: A new Set object is created for each array, and then the union of both sets is calculated using the spread operator ([...a, ...b]). Finally, an array filter is applied to remove numbers that are present in both sets.

Pros and Cons

Lodash: The pros of using Lodash include:
- It's a widely used and well-maintained library with a large community.
- It provides a convenient way to perform common operations like set difference.
Native Set: The pros of using native Set include:
- It's a lightweight and efficient way to perform set operations.
- It's a built-in feature in JavaScript, so no additional libraries are required.

However, the cons of using Lodash for this specific benchmark are:

Adding an extra library dependency, which may introduce overhead.
The performance benefits of using native Set might be lost due to the indirection through Lodash.

On the other hand, the pros of using native Set include:

No additional dependencies or overhead.
Direct access to a lightweight and efficient data structure.

The cons of using native Set are:

It requires more manual effort to implement the set difference logic.
It may not be as convenient or readable as using Lodash.

Library Used

In this benchmark, the Lodash library is used in the following way:

var c = _.difference(a, b);

The purpose of the Lodash library is to provide a convenient way to perform common operations like set difference, union, and intersection. It allows developers to write more concise and readable code without having to implement these operations from scratch.

Special JS Feature/Syntax

There are no special JavaScript features or syntax used in this benchmark that would require additional explanation. However, it's worth noting that the use of const and arrow functions ((num) => !...)) is modern JavaScript syntax, but not necessary for understanding the underlying logic.

LLMs can make mistakes. Check important info.

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

**Benchmark Definition**

The benchmark tests two approaches to calculate the set difference between two arrays: using the `Lodash` library and using the native `Set` data structure in JavaScript.

**Options Compared**

The options being compared are:

1. **Lodash**: The `difference()` function from the Lodash library is used to calculate the set difference.
2. **Native Set**: A new `Set` object is created for each array, and then the union of both sets is calculated using the spread operator (`[...a, ...b]`). Finally, an array filter is applied to remove numbers that are present in both sets.

**Pros and Cons**

1. **Lodash**: The pros of using Lodash include:
	* It's a widely used and well-maintained library with a large community.
	* It provides a convenient way to perform common operations like set difference.
2. **Native Set**: The pros of using native `Set` include:
	* It's a lightweight and efficient way to perform set operations.
	* It's a built-in feature in JavaScript, so no additional libraries are required.

However, the cons of using Lodash for this specific benchmark are:

* Adding an extra library dependency, which may introduce overhead.
* The performance benefits of using native `Set` might be lost due to the indirection through Lodash.

On the other hand, the pros of using native `Set` include:

* No additional dependencies or overhead.
* Direct access to a lightweight and efficient data structure.

The cons of using native `Set` are:

* It requires more manual effort to implement the set difference logic.
* It may not be as convenient or readable as using Lodash.

**Library Used**

In this benchmark, the Lodash library is used in the following way:
```javascript
var c = _.difference(a, b);
```
The purpose of the `Lodash` library is to provide a convenient way to perform common operations like set difference, union, and intersection. It allows developers to write more concise and readable code without having to implement these operations from scratch.

**Special JS Feature/Syntax**

There are no special JavaScript features or syntax used in this benchmark that would require additional explanation. However, it's worth noting that the use of `const` and arrow functions (`(num) => !...)`) is modern JavaScript syntax, but not necessary for understanding the underlying logic.

Related benchmarks:

Lodash vs. Set Difference Method (version: 0)

Comparing performance of: Lodash vs Set

Created: one year ago by: Guest

Jump to the latest result

Lodash

Set

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 5 months ago):