Benchmark: Array of objects equivalence (custom vs lodash)

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

function equivalent(arr1, arr2) {
    if (arr1.length !== arr2.length) {
        return false
    }
    arr1.forEach((elem) => {
        const index = arr2.findIndex((elem2) => elem === elem2)
        if (index === -1) { // not found
            return false
        }
        arr2.splice(index, 1) // remove element
    })
    if (arr2.length > 0) { // if still values in arr2, they are not in arr1
        return false
    }
    return true
}

function _equiv(arr1, arr2) {
    return _.isEqual(_.sortBy(arr1), _.sortBy(arr2))
}

Tests:

lodash
const arr1 = [{ KMFGNHeL: 0.2033444758693359, HJMzVLhZ: 373, WeKLrVwh: 'BlgvHn', hutdufbF: 'dfalRd', XqrwJjnR: null }, { xSUdtASV: 'ejVI', pgUHOMNn: true, dhQPzxuj: false, MHUchilq: 719, TWHkCOOT: 0.46691745627158165 }] const arr2 = [{ fZhKYyQT: 379, WtnguXmc: 64, VaodnYbC: 0.7490618732830732, hGhDbXmd: { pQnhfhKR: 0.029586390538915097, oSpBStGM: { dKoUrTyg: 0.8023980228055398, RMSlVEQw: null, KiPTRmIf: 'GIfgX', OOpGOzXD: null, YSTcLKDa: 777 }, eDsjVaPK: null, LrqwYwJs: 0.4117401997875565, AbIoXBix: 'THmFh' }, anQZVYxA: 0.8284963046084715 }] _equiv(arr1, arr2)
custom
const arr1 = [{ KMFGNHeL: 0.2033444758693359, HJMzVLhZ: 373, WeKLrVwh: 'BlgvHn', hutdufbF: 'dfalRd', XqrwJjnR: null }, { xSUdtASV: 'ejVI', pgUHOMNn: true, dhQPzxuj: false, MHUchilq: 719, TWHkCOOT: 0.46691745627158165 }] const arr2 = [{ fZhKYyQT: 379, WtnguXmc: 64, VaodnYbC: 0.7490618732830732, hGhDbXmd: { pQnhfhKR: 0.029586390538915097, oSpBStGM: { dKoUrTyg: 0.8023980228055398, RMSlVEQw: null, KiPTRmIf: 'GIfgX', OOpGOzXD: null, YSTcLKDa: 777 }, eDsjVaPK: null, LrqwYwJs: 0.4117401997875565, AbIoXBix: 'THmFh' }, anQZVYxA: 0.8284963046084715 }] equivalent(arr1, arr2)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash
custom

Fastest: N/A

Slowest: N/A

Latest run results:

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

LLMs can make mistakes. Check important info.

Let's break down the benchmark and explain what's being tested, compared, and their pros and cons.

**What's being tested?**

The benchmark is testing two approaches to check if two arrays of objects are equivalent:

1. **Custom implementation**: The `equivalent` function checks each element of both arrays for equality by using `findIndex` to find the index of a matching object in the second array, and then removing that element from the second array. If any elements are not found, it returns false.
2. **Lodash library**: The `_equiv` function uses the Lodash library's `isEqual` function to check if two arrays of objects are equivalent.

**Options compared**

The benchmark is comparing the performance of these two approaches:

* Custom implementation
* Lodash library

**Pros and Cons:**

1. **Custom implementation**:
	* Pros:
		+ May be more efficient since it doesn't require loading an external library.
		+ Can provide insight into the performance characteristics of a custom implementation.
	* Cons:
		+ Requires manual implementation, which can be error-prone and time-consuming.
		+ May not be as robust or flexible as a well-maintained library like Lodash.
2. **Lodash library**:
	* Pros:
		+ Provided by a widely-used and maintained library, reducing the chance of errors.
		+ Often includes optimized implementations for common use cases.
	* Cons:
		+ Requires loading an external library, which can add overhead.
		+ May not be as efficient as a custom implementation that's specifically tailored to this use case.

**Other considerations**

1. **Lodash library**: Lodash is a popular utility library for JavaScript that provides many useful functions for working with arrays, objects, and more. In this benchmark, the `_equiv` function uses `isEqual`, which compares two values using a deep equality check.
2. **Custom implementation**: The custom implementation assumes that all elements in both arrays are objects with similar properties. If this is not the case, the comparison may not work correctly.

**Alternatives**

Other alternatives to consider when checking array equivalence include:

1. Using a different library, such as `lodash-es` or `ramda`, which offer alternative equality checks.
2. Implementing a custom equality check using a different algorithm or data structure, such as a hash table or a trie.
3. Using a testing framework like Jest or Mocha to write and run automated tests for the custom implementation.

In conclusion, this benchmark is testing two approaches to checking array equivalence: a custom implementation and a Lodash library-based approach. The pros and cons of each approach highlight the trade-offs between performance, efficiency, and maintainability.

Related benchmarks:

Array of objects equivalence (custom vs lodash) (version: 0)

Comparing performance of: lodash vs custom

Created: 5 years ago by: Registered User

Jump to the latest result

lodash

custom

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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