Benchmark: Deep compare two object

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Tests:

lodash
const a = { testing: 3, testing2: { deep1: 1, deep2: 2, deep3: { deepfried: 5 } } } const b = { testing: 3, testing2: { deep1: 1, deep2: 2, deep3: { deepfried: 5 } } } const result = _.isEqual(a, b);
stringify
const a = { testing: 3, testing2: { deep1: 1, deep2: 2, deep3: { deepfried: 5 } } } const b = { testing: 3, testing2: { deep1: 1, deep2: 2, deep3: { deepfried: 5 } } } const result = JSON.stringify(a) === JSON.stringify(b)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash
stringify

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):

LLMs can make mistakes. Check important info.

Let's dive into the explanation of the provided benchmark.

**Benchmark Overview**

The provided JSON represents two test cases for measuring JavaScript microbenchmarks on MeasureThat.net. The tests compare the performance of two approaches: using the `lodash` library to deep-compare objects and using `JSON.stringify()` to compare the equality of two objects.

**Test Case 1: Deep Compare with Lodash**

* **Benchmark Definition**: A sample object `a` is defined, containing nested objects and properties. Another identical object `b` is also defined.
* **Library Used**: The `lodash` library, specifically the `isEqual()` function.
* **Purpose**: To compare the performance of deep-comparing two objects using `lodash`.
* **Pros**:
	+ Efficiently handles complex object structures with nested objects and arrays.
	+ Provides a robust and flexible way to compare objects for equality.
* **Cons**:
	+ Adds an external dependency (the `lodash` library), which may impact performance or compatibility.
	+ May have a higher overhead due to the library's complexity.

**Test Case 2: Deep Compare using JSON.stringify()**

* **Benchmark Definition**: The same sample object `a` and identical object `b` are defined as in Test Case 1.
* **Purpose**: To compare the performance of comparing two objects for equality using `JSON.stringify()`.
* **Pros**:
	+ Does not require an external library, which may reduce overhead or improve compatibility.
	+ Simple and lightweight implementation.
* **Cons**:
	+ May not handle complex object structures as efficiently as `lodash`.
	+ Requires converting the entire object to a string, which can be inefficient for large objects.

**Special Feature/Syntax Used**

In both test cases, the use of ES6 template literals (`\r\n \ttesting: 3,\r\n`) allows for concise and readable code. No additional syntax or features are used in these tests.

**Alternative Approaches**

Other alternatives to deep-comparing two objects include:

1. Using `Object.is()` (a built-in JavaScript function) to compare primitive values, but this may not work as expected for complex object structures.
2. Implementing a custom comparison function using recursion and/or iteration.
3. Using other libraries or frameworks that provide deep-comparison functionality, such as `deep-equal` or `fast-deep-equal`.

Keep in mind that the choice of approach depends on specific requirements, performance constraints, and compatibility considerations.

**Benchmark Results**

The provided latest benchmark results show the execution counts per second for each test case, indicating the relative performance of `lodash` vs. `JSON.stringify()`. The results suggest that `lodash` outperforms `JSON.stringify()` in this particular scenario.

Latest run results:

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

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.0 Mobile/15E148 Safari/604.1

Browser/OS: Mobile Safari 18 on iOS 18.0

View result in a separate tab

Test name	Executions per second
lodash	2155767.2 Ops/sec
stringify	4079549.0 Ops/sec

Related benchmarks:

Deep compare two object (version: 0)

Comparing performance of: lodash vs stringify

Created: 2 years ago by: Guest

Jump to the latest result

lodash

stringify

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):