Benchmark: <script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.min.js'></script>

Script Preparation code:

var obj = {};
for (let i = 0; i < 1000; i++) {
    const randomNum = Math.floor(Math.random() * 4);
    obj[i.toString()] =
        randomNum === 0 ? "undefined" : randomNum === 1 ? false : true;
}

Tests:

Lodash pickBy
_.pickBy(obj);
Native Filter
function pickBy(object) { const obj = {}; for (const key in object) { if (object[key]) { obj[key] = object[key]; } } return obj; } pickBy(obj)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash pickBy
Native Filter

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.

Let's break down the provided JSON benchmark data.

**Benchmark Definition:**
The website uses a JSON file to define the benchmark, which includes:

* `Name`: The URL of the JavaScript library used in the benchmark (in this case, Lodash).
* `Description`: A brief description of the benchmark is not provided.
* `Script Preparation Code`: This code initializes an object with 1000 properties and assigns a random value to each property based on a number generated by `Math.random()`. This creates a unique object for each execution.
* `Html Preparation Code`: There is no HTML preparation code, indicating that the benchmark only runs in Node.js or other environments where JavaScript is executed without an HTML context.

**Individual Test Cases:**
The benchmark includes two test cases:

1. **Lodash pickBy**: The first test case uses the Lodash library's `pickBy` function to create a new object containing only the specified properties from the original object.
2. **Native Filter**: The second test case defines an inline function `pickBy` that iterates over the properties of the input object and creates a new object with only the key-value pairs where the value is not `undefined`, `false`, or `0`. This function mimics the behavior of Lodash's `pickBy` function.

**Options Compared:**
The benchmark compares two options:

1. **Lodash pickBy**: Using the built-in `pickBy` function from Lodash to create a new object with filtered properties.
2. **Native Filter**: Implementing an inline function that manually filters properties of the input object.

**Pros and Cons of Each Approach:**

* **Lodash pickBy**:
	+ Pros:
		- Leverages optimized C++ code in Lodash for performance.
		- Simplifies code by reusing a well-tested library function.
	+ Cons:
		- Requires including an external library (Lodash), which may add overhead or dependencies.
* **Native Filter**:
	+ Pros:
		- Does not require any additional libraries or dependencies.
		- Can be optimized for specific use cases and environments.
	+ Cons:
		- May have slower performance compared to the optimized C++ code in Lodash.

**Library:**
Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks like array manipulation, object iteration, and more. In this benchmark, the `pickBy` function is used to create a new object with filtered properties from an input object.

**Special JS Features/Syntax:**
There are no special JavaScript features or syntax used in these test cases. The code only uses standard JavaScript constructs like loops, conditionals, and object iteration.

**Alternatives:**
Other alternatives for implementing the `pickBy` function could include:

* Using a different JavaScript library or framework that provides similar functionality (e.g., Ramda).
* Implementing a custom loop-based solution in pure JavaScript.
* Utilizing browser-specific APIs or features (if applicable) to optimize performance.

However, these alternatives may not match the simplicity and performance of using Lodash's `pickBy` function.

Related benchmarks:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.min.js'></script> (version: 0)

Comparing performance of: Lodash pickBy vs Native Filter

Created: 2 years ago by: Guest

Jump to the latest result

Lodash pickBy

Native Filter

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):