Benchmark: closure vs classes js

Tests:

closures
function createClosure(one, two) { let result = null; return { compute() { result = one * two * one * two; }, printResult() { console.log(result) } } } const amt = 200; let contents = new Array(amt); for (let i = 0; i < amt; i ++) { contents[i] = createClosure(Math.random(), Math.random()); contents[i].compute(); contents[i].printResult(); }
classes
class MyClass { result = null; constructor(one, two) { this.one = one; this.two = two; } compute() { this.result = this.one * this.two * this.one * this.two; } printResult() { console.log(this.result); } } const amt = 200; let contents = new Array(amt); for (let i = 0; i < amt; i ++) { contents[i] = new MyClass(Math.random(), Math.random()); contents[i].compute(); contents[i].printResult(); }

Historical Performance Data aggregated from 13 community runs

Desktop Results:

Chrome 13 runs

closures

701/s

classes

677/s

View exact numbers

✓ closures: 701 ops/sec
• classes: 677 ops/sec

Results show median performance across all community submissions. Run this benchmark yourself to verify on your device.

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
closures
classes

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser/OS: Chrome 137 on Android

View result in a separate tab

closures

247/s

classes

229/s

View exact numbers

Test name	Executions per second
✓ closures	247 Ops/sec
classes	229 Ops/sec

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

LLMs can make mistakes. Check important info.

I'll break down the benchmark and explain what's being tested.

**Benchmark Overview**

The benchmark compares the performance of two approaches to create and execute code: closures (using a function) versus classes (using a class definition).

**Options Compared**

1. **Closures**: A closure is a function that has access to its own scope, as well as the scope of its outer functions or variables. In this case, the `createClosure` function takes two parameters (`one` and `two`) and returns an object with two methods: `compute()` and `printResult()`. The closure captures the values of `one` and `two` by value, so they are preserved even when the outer function is executed.
2. **Classes**: A class is a blueprint for creating objects that have properties and methods. In this case, the `MyClass` class has two instance variables (`one` and `two`) and two methods: `compute()` and `printResult()`. The class definition uses the `this` keyword to access its own scope.

**Pros and Cons of Each Approach**

1. **Closures**:
	* Pros:
		+ More concise and expressive, as it eliminates the need for explicit getter and setter methods.
		+ Can be more efficient, since there is no overhead from creating a class instance or accessing its properties through a dot notation.
	* Cons:
		+ Can lead to tighter coupling between functions and their outer scope, making code harder to read and maintain.
		+ May require additional effort to ensure that closures are properly scoped and don't leak variables into the global scope.
2. **Classes**:
	* Pros:
		+ More explicit and readable, as it clearly defines a blueprint for creating objects with properties and methods.
		+ Easier to extend or modify classes using inheritance or composition.
	* Cons:
		+ Can be more verbose and cumbersome, especially when dealing with complex class hierarchies.
		+ May incur overhead from creating a class instance and accessing its properties through a dot notation.

**Library and Special JS Features**

There are no libraries used in this benchmark, but I can explain some common JavaScript features that might be relevant:

* **Arrow functions**: Not used in this benchmark, as the `createClosure` function is a traditional function definition.
* **Prototype-based inheritance**: Not explicitly demonstrated, but classes do inherit properties and methods from their prototype chain.

**Other Considerations**

When choosing between closures and classes for creating code execution units, consider the following:

* If you need a lightweight, flexible way to create small, self-contained pieces of code that don't require explicit getter and setter methods, closures might be a better choice.
* If you prefer a more explicit, readable approach to defining blueprints for creating objects with properties and methods, classes are likely a better fit.

**Alternatives**

If you're interested in exploring alternative approaches to closures and classes, consider the following:

* **MVP (Model-View-Presenter)** pattern: A design pattern that separates concerns into distinct components, which can lead to more modular and maintainable code.
* **Function composition**: A technique for creating complex functions from simpler ones by combining them using function application or higher-order functions.
* **Object functional programming**: An approach to writing code that uses data structures and algorithms as first-class citizens, often with a strong focus on immutability.

Keep in mind that these alternatives may require additional context and expertise to effectively apply.

closure vs classes js (version: 0) Benchmark.js

Comparing performance of: `closures vs classes`

Created: 3 years ago by: Guest

Go to the latest result

closures

classes

Historical Performance Data aggregated from 13 community runs

Desktop Results:

Chrome 13 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

closure vs classes js (version: 0) Benchmark.js

Comparing performance of: closures vs classes

Created: 3 years ago by: Guest

Go to the latest result

closures

classes

Historical Performance Data aggregated from 13 community runs

Desktop Results:

Chrome 13 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

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Comparing performance of: `closures vs classes`