Benchmark: comparing two equal checkers function

Tests:

equality by gettingDifferences
const equalArrays = (arr1, arr2) => arr1.length === arr2.length && arr1.every((element, index) => getDifferences(element, arr2[index]) === undefined) function getDifferences(original, modified) { if (original instanceof Array && modified instanceof Array) { return equalArrays(original, modified) ? undefined : modified } if (original instanceof Object && modified instanceof Object) { let result = {} for (const key of Object.keys(modified)) { const diff = getDifferences(original[key], modified[key]) if (diff !== undefined) { result[key] = diff } } return !Object.keys(result).length ? undefined : result } return original === modified ? undefined : modified }
equality by self function
const deepEqual = (thing1, thing2) => { if (thing1 instanceof Object && thing2 instanceof Object) return Object.keys(thing1).every(key => deepEqual(thing1[key], thing2[key])) return thing1 === thing2 }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
equality by gettingDifferences
equality by self function

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:82.0) Gecko/20100101 Firefox/82.0

Browser/OS: Firefox 82 on Ubuntu

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Test name	Executions per second
equality by gettingDifferences	7317176.5 Ops/sec
equality by self function	8108254.5 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided JSON and explain what is tested, compared, pros and cons of different approaches, and other considerations.

**Benchmark Definition**

The benchmark definition provides two JavaScript functions for comparing equality between arrays and objects:

1. `equalArrays(arr1, arr2)`: This function checks if two arrays are equal by comparing their lengths and then checking if every element at the same index in both arrays is equal using another function called `getDifferences`.
2. `deepEqual(thing1, thing2)`: This function checks if two objects are deeply equal by iterating over their keys and recursively calling itself for each key-value pair.

**Comparison of Approaches**

The two approaches differ in how they handle nested objects:

* `equalArrays` uses a recursive approach to check for equality, which can lead to performance issues when dealing with large arrays or deep object structures. However, it is simpler to implement.
* `deepEqual` uses an iterative approach that recursively checks for equality at each key-value pair level, providing more robustness and performance for handling nested objects.

**Pros and Cons**

Pros of `equalArrays`:

* Simpler to implement
* Faster execution time

Cons of `equalArrays`:

* Can be less accurate due to the recursive nature of the function
* May not handle large arrays or deep object structures well

Pros of `deepEqual`:

* More accurate by checking for equality at each key-value pair level
* Better handling of nested objects

Cons of `deepEqual`:

* Slower execution time compared to `equalArrays`
* More complex implementation

**Library and Special JS Features**

The provided benchmark definition does not use any external libraries. However, the `getDifferences` function in `equalArrays` uses a custom implementation that checks for equality between two values.

There are no special JavaScript features used in this benchmark definition, such as async/await, Promises, or modern ES6+ syntax.

**Alternatives**

Other alternatives for comparing equality between arrays and objects include:

* Using the built-in `Array.prototype.every()` method to check for equality
* Utilizing a library like Lodash's `isEqual` function for deep object comparison
* Implementing a custom recursive function for array and object comparison

For example, using the `Array.prototype.every()` method:
```javascript
function equalArrays(arr1, arr2) {
  return arr1.length === arr2.length && arr1.every((element, index) => element === arr2[index]);
}
```
It's worth noting that these alternatives may have different performance characteristics and trade-offs compared to the provided benchmark definition.

Related benchmarks:

comparing two equal checkers function (version: 0)

Comparing performance of: equality by gettingDifferences vs equality by self function

Created: 4 years ago by: Guest

Jump to the latest result

equality by gettingDifferences

equality by self function

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):