Benchmark: is Equal array test

HTML Preparation code:

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

Script Preparation code:

// 1 level deep
window.foo1 = ['hello world'];
window.bar1 = ['hello world'];

// 2 levels deep
window.foo2 = ['hello world', 'hello planets', 'hello anyone there'];;
window.bar2 = ['hello world', 'hello planets', 'hello anyone there'];;

// 3 levels deep
window.foo3 = ['hello world', 'hello planets', 'hello anyone there', 'something else', 'string string'];;
window.bar3 = ['hello world', 'hello planets', 'hello anyone there', 'something else', 'string string'];;

Tests:

_.isEqual Level 1
_.isEqual(window.foo1, window.bar1)
JSON.stringify Level 1
JSON.stringify(window.foo1) === JSON.stringify(window.bar1);
_.isEqual Level 2
_.isEqual(window.foo2, window.bar2)
JSON.stringify Level 2
JSON.stringify(window.foo2) === JSON.stringify(window.bar2);
_.isEqual Level 3
_.isEqual(window.foo3, window.bar3)
JSON.stringify Level 3
JSON.stringify(window.foo3) === JSON.stringify(window.bar3);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
_.isEqual Level 1
JSON.stringify Level 1
_.isEqual Level 2
JSON.stringify Level 2
_.isEqual Level 3
JSON.stringify Level 3

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 28 days ago):

LLMs can make mistakes. Check important info.

Let's break down what's being tested in the provided benchmark and explore the options, pros, cons, and considerations.

**Benchmark Description**

The test is designed to measure the performance of comparing two arrays or objects for equality using different methods: `_.isEqual` from Lodash (a popular utility library) and string comparison using `JSON.stringify`.

**Options Compared**

There are four test cases:

1. **_.isEqual(window.foo1, window.bar1)**: This test uses the `_` object from Lodash to perform an equality check between two arrays.
2. **JSON.stringify(window.foo1) === JSON.stringify(window.bar1)**: This test converts both arrays to strings using `JSON.stringify` and then compares them for equality.
3. **_.isEqual(window.foo2, window.bar2)**: Similar to the first test case but with a more nested array structure.
4. **JSON.stringify(window.foo2) === JSON.stringify(window.bar2)**: Similar to the second test case but with a more nested array structure.

**Pros and Cons**

1. **_.isEqual**: Pros:
	* Efficient for deep equality checks
	* Handles complex data structures (e.g., objects, arrays)
Cons:
	* Requires Lodash library
	* May be slower due to overhead of the library
2. **JSON.stringify**: Pros:
	* Lightweight and efficient
	* Fast string comparisons
Cons:
	* Limited by JavaScript's string comparison rules
	* May not work as expected with non-string data types

**Other Considerations**

1. **Lodash (.isEqual)**: Lodash is a popular utility library that provides various helper functions for common tasks, such as equality checks. Its `_.isEqual` function performs a deep comparison of two objects or arrays and returns a boolean value indicating whether they are equal.
2. **JSON.stringify**: This method converts an object or array to a string representation, which can be compared using the `===` operator.

**Test Case Analysis**

The test cases are designed to evaluate the performance of both methods under different scenarios:

1. **_.isEqual Level 1** and **JSON.stringify Level 1**: These tests compare two arrays with a similar structure (single-level arrays). The expected outcome is that `_.` will be faster due to its efficient implementation.
2. **_.iselLevel 2** and **JSON.stringify Level 2**: These tests compare more nested arrays. Again, the expected outcome is that `.isEqual` should perform better due to its ability to handle complex data structures.

In summary, this benchmark measures the performance of two methods for comparing arrays: `_.isEqual` from Lodash and string comparison using `JSON.stringify`. The test evaluates both methods under different scenarios, highlighting their strengths and weaknesses.

Latest run results:

Run details: (Test run date: 5 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36

Browser/OS: Chrome 68 on Mac OS X 10.13.6

View result in a separate tab

Test name	Executions per second
_.isEqual Level 1	1187561.2 Ops/sec
JSON.stringify Level 1	736801.3 Ops/sec
_.isEqual Level 2	1202309.5 Ops/sec
JSON.stringify Level 2	588149.1 Ops/sec
_.isEqual Level 3	1173865.8 Ops/sec
JSON.stringify Level 3	520129.2 Ops/sec

Related benchmarks:

is Equal array test (version: 0)

Test on isEqual performance

Comparing performance of: _.isEqual Level 1 vs JSON.stringify Level 1 vs _.isEqual Level 2 vs JSON.stringify Level 2 vs _.isEqual Level 3 vs JSON.stringify Level 3

Created: 5 years ago by: Guest

Jump to the latest result

_.isEqual Level 1

JSON.stringify Level 1

_.isEqual Level 2

JSON.stringify Level 2

_.isEqual Level 3

JSON.stringify Level 3

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 28 days ago):