Benchmark: Lodash isEqual test with Equation

HTML Preparation code:

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

Script Preparation code:

window.foo1 = 1
window.bar1 = 2

Tests:

_.isEqual
_.isEqual(window.foo1, window.bar1)
Triple Equals
window.foo1 === window.bar1;
Double Equals
window.foo1 == window.bar1;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
_.isEqual
Triple Equals
Double Equals

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36

Browser/OS: Chrome 78 on Mac OS X 10.14.6

View result in a separate tab

Test name	Executions per second
_.isEqual	2924505.5 Ops/sec
Triple Equals	4556319.5 Ops/sec
Double Equals	4488073.5 Ops/sec

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

LLMs can make mistakes. Check important info.

**Overview**

The provided JSON represents a JavaScript benchmark test case on MeasureThat.net. The test measures the performance of three different equality checks: `_.isEqual` from Lodash, double equals (`==`), and triple equals (`===`). We'll break down each option, their pros and cons, and any notable features or considerations.

**Options Compared**

1. **_.isEqual (from Lodash)**:
	* Purpose: Compare two values for deep equality.
	* Pros: Highly customizable, can handle complex data structures, and is often preferred in functional programming.
	* Cons: Can be slower than simple `===` checks due to its more thorough comparison process.
2. **Double Equals (`==`)**:
	* Purpose: Compare two values for loose equality (i.e., only checks for value equality, not type).
	* Pros: Fast and simple to implement.
	* Cons: Inaccurate in some cases (e.g., comparing a string with its length) and can lead to unexpected behavior.
3. **Triple Equals (`===`)**:
	* Purpose: Compare two values for strict equality (i.e., checks both value and type).
	* Pros: Fast, simple, and accurate.
	* Cons: Limited in its ability to compare complex data structures.

**Library and Its Purpose**

Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks such as functional programming, data manipulation, and more. In this benchmark, Lodash's `_.isEqual` function is used to perform deep equality checks between two values.

**Special JS Feature or Syntax**

None of the tested options require any special JavaScript features or syntax beyond the standard `==` and `===` operators. However, it's worth noting that some older browsers may not support `===` due to issues with its implementation in certain engines.

**Other Alternatives**

For comparing equality in JavaScript, other alternatives include:

1. **Weak Equality**: Some modern browsers support a new type of equality check called "weak equality" (`===`). This is similar to strict equality but returns `false` for objects that are not instances of the same class.
2. **JSON Equality**: If you're working with JSON data, you can use the built-in `JSON.stringify()` and `JSON.parse()` methods to compare values.

**Benchmark Considerations**

When choosing an equality check method, consider the following factors:

1. **Performance**: For high-performance applications or critical code paths, `===` is generally the fastest option.
2. **Complexity**: If you need to perform deep equality checks on complex data structures, `_.isEqual` from Lodash may be a better choice due to its customizability and handling of nuances like cyclic references.
3. **Accuracy**: For applications where accuracy is crucial (e.g., financial calculations), `===` is generally the safest option.

By understanding these factors, developers can make informed decisions when choosing an equality check method for their specific use cases.

Related benchmarks:

Lodash isEqual test with Equation (version: 1)

Test on isEqual performance

Comparing performance of: _.isEqual vs Triple Equals vs Double Equals

Created: 6 years ago by: Registered User

Jump to the latest result

_.isEqual

Triple Equals

Double Equals

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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