Benchmark: MapVsLodash - MeasureThat.net

HTML Preparation code:

<script src='https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js'></script>

Tests:

Map
const arr = [ {badge_id: "1"}, {badge_id: "1"}, {badge_id: "2"}, {badge_id: "2"}, {badge_id: "3"}, {badge_id: "3"}, {badge_id: "3"}, {badge_id: "3"}, {badge_id: "3"} ]; const distinctBadges = []; arr.map((item) => { if (distinctBadges.filter((badgeRecord) => badgeRecord.badge_id == item.badge_id).length === 0) { distinctBadges.push(item); } }); console.log(distinctBadges);
Lodash
const arr = [ {badge_id: "1"}, {badge_id: "1"}, {badge_id: "2"}, {badge_id: "2"}, {badge_id: "3"}, {badge_id: "3"}, {badge_id: "3"}, {badge_id: "3"}, {badge_id: "3"} ]; const distinctBadges = _.uniq(arr); console.log(distinctBadges);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Map
Lodash

Fastest: N/A

Slowest: N/A

Latest run results:

No previous 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 provided benchmark and explain what's being tested.

**Benchmark Overview**

The benchmark is comparing two approaches to remove duplicate elements from an array: using JavaScript's built-in `Array.prototype.map()` method (referred to as "Map") and using Lodash's `uniq()` function (referred to as "Lodash").

**Options Compared**

Two options are being compared:

1. **JavaScript's `Array.prototype.map()` method**: This is a built-in JavaScript function that creates a new array with the results of applying a provided function on every element in this array.
2. **Lodash's `uniq()` function**: Lodash is a popular JavaScript library that provides various utility functions, including `uniq()`, which removes duplicate elements from an array.

**Pros and Cons**

Here are some pros and cons of each approach:

**JavaScript's `Array.prototype.map()` method:**

Pros:

* Lightweight and efficient
* Can be used with any function, not just a simple filtering function

Cons:

* Requires manual implementation of the filtering logic
* May have performance issues if the filtering function is complex or has side effects
* Does not provide an immediate result, requiring additional processing to filter out duplicates

**Lodash's `uniq()` function:**

Pros:

* Easy to use and understand
* Provides a simple and efficient way to remove duplicates
* No need to implement manual filtering logic

Cons:

* Requires the Lodash library, which may add overhead
* May not be suitable for all use cases (e.g., performance-critical code)

**Library: Lodash**

Lodash is a popular JavaScript library that provides various utility functions. The `uniq()` function is part of this library and is used to remove duplicate elements from an array.

**Special JS Feature/Syntax**

There are no special JS features or syntaxes being tested in this benchmark. Both approaches rely on standard JavaScript features.

**Other Alternatives**

If you're looking for alternative ways to remove duplicates from an array, here are a few options:

* Using `Array.prototype.filter()` and `Set` objects: This approach involves filtering out elements that already exist in the set.
* Using a custom implementation with a data structure like a trie or a hash table: These approaches can be more efficient for large datasets but require more code and expertise.

Keep in mind that the best approach depends on your specific use case, performance requirements, and personal preference.

Related benchmarks:

MapVsLodash (version: 0)

Comparing performance of: Map vs Lodash

Created: 4 years ago by: Guest

Jump to the latest result

Map

Lodash

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):