Benchmark: PR check - MeasureThat.net

Tests:

1
const abcd = []; const a = { name: 'name 1', income: 123, gap: 500, gapProportion: 0.2 }; const b = { name: 'name 1', income: 123, gap: 500, gapProportion: 0.2 }; const c = { name: 'name 1', income: 123, gap: 500, gapProportion: 0.2 }; const d = { name: 'name 1', income: 123, gap: 500, gapProportion: 0.2 }; abcd.push(a); abcd.push(b); abcd.push(c); abcd.push(d);
2
const abcd = []; [{ name: 'name 1', income: 123, gap: 500, gapProportion: 0.2 }, { name: 'name 1', income: 123, gap: 500, gapProportion: 0.2 }, { name: 'name 1', income: 123, gap: 500, gapProportion: 0.2 }, { name: 'name 1', income: 123, gap: 500, gapProportion: 0.2 }].forEach(x => abcd.push(x));

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
1
2

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0

Browser/OS: Firefox 115 on Windows

View result in a separate tab

Test name	Executions per second
1	32527894.0 Ops/sec
2	20127362.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark definitions and explanations.

**Benchmark Definition**

The benchmark definition is an object that describes the test to be performed. In this case, we have two benchmark definitions:

1. `"const abcd = [];\r\nconst a = { name: 'name 1', income: 123, gap: 500, gapProportion: 0.2 };\r\nconst b = { name: 'name 1', income: 123, gap: 500, gapProportion: 0.2 };\r\nconst c = { name: 'name 1', income: 123, gap: 500, gapProportion: 0.2 };\r\nconst d = { name: 'name 1', income: 123, gap: 500, gapProportion: 0.2 };\r\nabcd.push(a);\r\nabcd.push(b);\r\nabcd.push(c);\r\nabcd.push(d);"`
This benchmark definition is testing the performance of JavaScript arrays and objects by pushing multiple objects into an array.

2. `"const abcd = [];\r\n[{ name: 'name 1', income: 123, gap: 500, gapProportion: 0.2 },\r\n{ name: 'name 1', income: 123, gap: 500, gapProportion: 0.2 },\r\n{ name: 'name 1', income: 123, gap: 500, gapProportion: 0.2 },\r\n{ name: 'name 1', income: 123, gap: 500, gapProportion: 0.2 }].forEach(x => abcd.push(x));"`
This benchmark definition is testing the performance of JavaScript arrays and objects by using the `forEach` method to push multiple objects into an array.

**Options Compared**

The two benchmark definitions are comparing different approaches to creating and pushing elements into a JavaScript array:

1. Manual loop (`abcd.push(a);`, etc.)
2. Array literal with `push` method (`[{ ... }, ...].forEach(x => abcd.push(x));`)

**Pros and Cons of Each Approach**

Manual Loop:

* Pros:
	+ Easy to understand and implement
	+ Can be optimized for specific use cases
* Cons:
	+ May lead to slower performance due to the overhead of loop control

Array Literal with `push` Method:

* Pros:
	+ More concise and readable
	+ Can be faster since it uses a built-in method
* Cons:
	+ May not be as flexible or customizable as a manual loop

**Library Used**

There is no explicit library used in these benchmark definitions. However, the use of `forEach` suggests that the JavaScript engine may be using its internal implementation of `forEach`, which could involve native code or other optimizations.

**Special JS Feature or Syntax**

The `forEach` method is a built-in JavaScript feature that was introduced in ECMAScript 5 (ES5). It allows you to execute a callback function for each element in an array. This feature is not specific to any particular browser or engine, but rather a part of the standard JavaScript language.

**Other Alternatives**

Other alternatives to these approaches could include:

* Using `Array.prototype.forEach.call()` or other native methods that achieve similar results
* Implementing custom loop logic using inline code or optimized assembly instructions
* Using libraries like Lodash or Ramda, which provide utility functions for working with arrays and objects

Note that the choice of approach depends on the specific use case and performance requirements. The benchmark definitions provided here are designed to test the performance of JavaScript engines in different scenarios.

Related benchmarks:

PR check (version: 0)

arrays

Comparing performance of: 1 vs 2

Created: one year ago by: Guest

Jump to the latest result

1

2

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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