Benchmark: sdffskdfklsdf - MeasureThat.net

HTML Preparation code:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.core.js"></script>

Script Preparation code:

var data = {
    'member_info_decrypt': [{
            'firebase_id': '1',
            'member_id': '1',
            'mobile_no': '1',
        },
        {
            'firebase_id': '2',
            'member_id': '2',
            'mobile_no': '2',
        },
        {
            'firebase_id': '3',
            'member_id': '3',
            'mobile_no': '3',
        }
    ]
};

Tests:

111111
_.map(data.member_info_decrypt, object => { return _.pick(object, ['firebase_id', 'member_id', 'mobile_no']) })
2222
const items = data.member_info_decrypt; items.map(({firebase_id,member_id,mobile_no})=>({firebase_id,member_id,mobile_no}))
33333
const items = data.member_info_decrypt; const length = items.length; const result = []; for(var i=0; i<length; i++) { const {firebase_id,member_id,mobile_no} = items[i]; result[i] = { firebase_id,member_id,mobile_no } }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
111111
2222
33333

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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

LLMs can make mistakes. Check important info.

I'll break down the provided benchmark and explain what's being tested, compared options, pros and cons of each approach, and other considerations.

**Benchmark Overview**

The benchmark is designed to compare three approaches for transforming an array of objects in JavaScript:

1. Using the ES6 spread operator (`...`)
2. Using the traditional `concat()` method
3. Using a traditional `for` loop with object destructuring

The benchmark measures the execution speed and number of executions per second for each approach.

**Library and Syntax Used**

In the provided code, Lodash is used as a utility library for its `_pick()` function, which extracts specific properties from an object.

No special JavaScript features or syntax are mentioned in this benchmark.

**Benchmark Definitions**

The three individual test cases are defined in the `Individual test cases` section. They can be summarized as follows:

1. **Test Case 111111**: Uses Lodash's `_map()` function to transform the array of objects using the ES6 spread operator (`...`). The resulting object is created by spreading the properties of each object in the original array.
2. **Test Case 2222**: Manually maps over the array of objects using a traditional `for` loop, but with a twist: it uses destructuring to extract the desired properties from each object.
3. **Test Case 33333**: Also manually maps over the array of objects using a traditional `for` loop, without using destructuring.

**Comparison and Pros/Cons**

The three approaches differ in their execution speed and conciseness:

* **ES6 spread operator (`...`) + Lodash's `_map()` function**: Fastest and most concise. The ES6 spread operator is optimized for performance, and combining it with Lodash's `_map()` function provides a straightforward way to transform the array.
* **Traditional `concat()` method**: Slower than the first approach due to the overhead of concatenating arrays manually.
* **Traditional `for` loop with object destructuring**: The slowest option. While this approach is concise, it involves manual iteration over the array and explicit property extraction, which can be slower than using the ES6 spread operator or Lodash's `_map()` function.

**Other Considerations**

When choosing an approach, consider the trade-offs between speed, conciseness, and maintainability:

* If performance is critical and readability is not a concern, the ES6 spread operator combined with Lodash's `_map()` function might be the best choice.
* If you need to perform complex transformations or want more control over the iteration process, a traditional `for` loop with object destructuring might be suitable.
* If you're using a version of JavaScript that doesn't support the ES6 spread operator, you'll need to use one of the other approaches.

**Alternatives**

Other alternatives for transforming an array of objects in JavaScript include:

* Using `Array.prototype.map()` without Lodash: This approach is similar to Test Case 111111 but without using the ES6 spread operator.
* Using `reduce()` instead of `map()`: This can be a useful alternative, especially when dealing with complex transformations or aggregate operations.

Keep in mind that the choice of approach depends on your specific use case and requirements.

Related benchmarks:

sdffskdfklsdf (version: 0)

Compare the new ES6 spread operator with the traditional concat() method

Comparing performance of: 111111 vs 2222 vs 33333

Created: 5 years ago by: Guest

Jump to the latest result

111111

2222

33333

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):