Benchmark: AB toggles check

Script Preparation code:

function makeId(length) {
	let result = '';
	const characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
	const charactersLength = characters.length;
	for (let i = 0; i < length; i++) {
		result += characters.charAt(Math.floor(Math.random() * charactersLength));
	}
	return result;
}

function makeToggle() {
	return { [makeId(16)]: 1 }
}

const togglesCount = 100;
var togglesOn = Array(togglesCount);

// Generate a number of random toggles
for(i = 0; i < togglesCount; i++) {
	togglesOn[i] = makeToggle();
}

// Check the last one for a worst-case scenario
const lastToggle = togglesOn[togglesCount - 1];
var toggleToCheck = Object.keys(lastToggle)[0];

Tests:

Find (current)
return !!togglesOn.find((toggle) => { return toggle[toggleToCheck] === 1; });
Some
return togglesOn.some(toggle => toggle[toggleToCheck] === 1)
Includes
return togglesOn.includes({ [toggleToCheck]: 1 });

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Find (current)
Some
Includes

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36

Browser/OS: Chrome 80 on Mac OS X 10.15.3

View result in a separate tab

Test name	Executions per second
Find (current)	110013.4 Ops/sec
Some	111347.1 Ops/sec
Includes	3613231.2 Ops/sec

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

LLMs can make mistakes. Check important info.

**Benchmark Overview**

The provided JSON represents a JavaScript microbenchmarking test case named "AB toggles check". This benchmark tests the performance of different methods for checking if a specific key exists in an object, specifically targeting the scenario where the object has 100 random key-value pairs.

**Script Preparation Code**

The script preparation code generates an array of 100 objects with unique keys, each containing a single key-value pair with a value of 1. The `makeToggle` function creates a new object with a randomly generated ID as the key and a value of 1. The `togglesOn` array stores these objects.

**Benchmark Definition**

The benchmark definition consists of three test cases:

1. **Find (current)**: Uses the `find()` method to check if an object has a specific key-value pair.
2. **Some**: Uses the `some()` method to check if any object in an array has a specific key-value pair.
3. **Includes**: Uses the `includes()` method to check if an object is present in an array.

**Comparison of Options**

The three test cases compare different approaches for checking existence:

*   **Find() vs. Some**: Both methods iterate through the objects, but `find()` returns the first matching element (or null), while `some()` returns a boolean indicating whether any match was found.
*   **Includes**: This method is often considered more efficient than `includes()` since it uses an optimized implementation for arrays.

**Pros and Cons**

Here's a brief summary of the pros and cons of each approach:

*   **Find()**: Returns the first matching element, can be faster if only one match is expected. However, may not be suitable if no matches are found.
*   **Some**: Faster than `find()` since it returns a boolean, but may be slower for exact matches due to iteration. Suitable for cases where at least one match is expected.
*   **Includes**: Often the fastest method due to optimized array implementation, but can be slower for exact matching scenarios.

**Library Usage**

The test case uses the following libraries:

*   None explicitly mentioned in the provided code

However, it's worth noting that JavaScript arrays and objects are built-in and don't rely on external libraries. The `includes()` method is a part of the ECMAScript standard.

**Special JS Features or Syntax**

This benchmark does not use any special JavaScript features or syntax beyond what's considered standard in modern JavaScript (ECMAScript 2020).

**Other Alternatives**

Alternative approaches for checking existence could include:

*   **forEach()**: Iterating over each object and performing a check within the callback function.
*   **every()**: Similar to `some()`, but returns true if all objects match, rather than just one.
*   **in operator**: Using the `in` operator directly on the object to check for key existence.

However, these alternatives may not be as efficient or optimized as the methods used in the benchmark.

Related benchmarks:

AB toggles check (version: 1)

Comparing performance of: Find (current) vs Some vs Includes

Created: 4 years ago by: Registered User

Jump to the latest result

Find (current)

Some

Includes

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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