Benchmark: Lodash pick and native method 1

HTML Preparation code:

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

Script Preparation code:

var arr = [];
var object = { 
	type: 'aaa',
    subtype: 'bbb',
    card_last4:'bbb',
    card_type:'bbb',
    card_exp_month:'bbb',
    card_exp_year:'bbb',
    card_country:'bbb',
    foo: 'bar'
};
for (var i = 0; i <= 10; i++) { arr.push(object); }

Tests:

Lodash pick
arr.map(function (element) { return _.pick( element, 'type', 'subtype', 'card_last4', 'card_type', 'card_exp_month', 'card_exp_year', 'card_country', 'something' ); });
Native pick
function pick(object, keys) { return keys.reduce((obj, key) => { if (object && object.hasOwnProperty(key)) { obj[key] = object[key]; } return obj; }, {}); } arr.map(function (element) { return pick( element, ['type', 'subtype', 'card_last4', 'card_type', 'card_exp_month', 'card_exp_year', 'card_country', 'something'] ); });

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash pick
Native pick

Fastest: N/A

Slowest: N/A

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

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Let's break down the provided benchmark and its explanations.

**Benchmark Overview**

The benchmark tests two approaches for filtering an object using JavaScript:

1. **Lodash `pick` method**: A popular utility library that provides a convenient way to extract specific properties from an object.
2. **Native `pick` function**: A native implementation of the same functionality, built into modern browsers.

**Options Compared**

The benchmark compares the performance of two options:

* Lodash's `pick` method
* Native JavaScript's `pick` function

**Pros and Cons of Each Approach**

### Lodash `pick` Method

Pros:

* Easy to use: The API is simple and intuitive.
* Flexibility: Can handle any number of properties being extracted.

Cons:

* Overhead: Loading an external library adds latency and increases the size of the benchmark execution.
* Complexity: Understanding how to use it effectively requires knowledge of Lodash's API.

### Native `pick` Function

Pros:

* Built-in: No additional overhead from loading a library.
* Lightweight: No extra dependencies or complexity.

Cons:

* Limited documentation: Not well-documented, making it harder for users to understand its usage.
* Verbosity: Requires manual handling of the function call and property iteration.

**Library Description**

Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks like array manipulation, object manipulation, and more. The `pick` method allows you to extract specific properties from an object while ignoring others.

In this benchmark, Lodash's `pick` method is used to filter the `object` structure and extract only certain properties (e.g., `type`, `subtype`, etc.).

**Special JS Features or Syntax**

The test cases use a special JavaScript feature: **Closure**. In the code snippet, `map()` function returns an array of new functions that are created when each iteration of the loop completes.

These functions capture the current value of `element` in their scope and then call the `pick()` method on it. This is possible due to JavaScript's closure behavior, which allows variables from outer scopes (like `i`) to be accessible within inner functions (the new function created for each iteration).

**Other Alternatives**

In addition to Lodash's `pick` method and native JavaScript's `pick` function, there might be other libraries or implementations that offer similar functionality. Some alternatives could include:

* Other utility libraries like `underscore.js`, `moment.js`, or `fast-json-pick`
* Custom-built solutions using a specific property iteration technique
* Browser-specific APIs (e.g., `Chrome's chrome.experimental.pick()`)

However, it's worth noting that Lodash's `pick` method is one of the most well-known and widely used alternatives, so it's likely to be the primary focus in such benchmarks.

Related benchmarks:

Lodash pick and native method 1 (version: 0)

Comparing performance of: Lodash pick vs Native pick

Created: 2 years ago by: Guest

Jump to the latest result

Lodash pick

Native pick

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):