Benchmark: Native delete vs Lodash omit vs Lodash pick - multiple properties

HTML Preparation code:

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

Script Preparation code:

data = { abf:'asd',message:'koko', msg1: 'abc', msg2: 'def', msg3: 'ghi' }

Tests:

Native delete
const meta = Object.assign({}, data); delete meta.message; delete meta.msg1; delete meta.msg2; delete meta.msg3; return { message: data.message, meta }
Lodash pick
return { message: _.pick(data, ['message', 'msg1', 'msg2', 'msg3']) }
Lodash omit
return { message: data.message, meta: _.omit(data, ['message', 'msg1', 'msg2', 'msg3']) }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Native delete
Lodash pick
Lodash omit

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript benchmarks.

**What is being tested?**

The provided JSON represents a benchmark test that compares the performance of three approaches:

1. Native JavaScript `delete` operator
2. Lodash's `omit` function (which removes specified properties from an object)
3. Lodash's `pick` function (which selects specific properties from an object)

**Options being compared**

The three options being compared are:

* Native JavaScript `delete`: This approach uses the native `delete` operator to delete properties from the `data` object.
* Lodash's `omit`: This approach uses the `omit` function from the Lodash library to remove specified properties from the `data` object. The `omit` function takes an array of property names as its second argument, and returns a new object with those properties removed.
* Lodash's `pick`: This approach uses the `pick` function from the Lodash library to select specific properties from the `data` object. Like `omit`, it takes an array of property names as its second argument.

**Pros and Cons**

Here are some pros and cons of each approach:

* Native JavaScript `delete`:
	+ Pros: Fast, lightweight, and doesn't require any additional libraries.
	+ Cons: May not be as efficient as the Lodash functions for large objects or when dealing with complex property names.
* Lodash's `omit`:
	+ Pros: Flexible and powerful, allows for removal of properties by name or by regex pattern.
	+ Cons: Requires an additional library (Lodash), which may add overhead to the test.
* Lodash's `pick`:
	+ Pros: Fast and efficient, allows for selection of multiple properties at once.
	+ Cons: Requires an additional library (Lodash), which may add overhead to the test.

**Library usage**

The Lodash library is being used in two of the three options:

* `omit`: Used to remove specified properties from the `data` object.
* `pick`: Used to select specific properties from the `data` object.

Both functions take an array of property names as their second argument, which allows for flexible and powerful filtering of the object's properties.

**Special JS features or syntax**

None of the options in this benchmark test use any special JavaScript features or syntax that would affect the performance comparison. However, it's worth noting that the `delete` operator is a feature of JavaScript that was introduced in ECMAScript 2015 (ES6), and its usage may vary depending on the version of JavaScript being used.

**Alternative approaches**

There are other ways to achieve similar results without using Lodash:

* Using a simple loop or recursive function to delete properties
* Using a third-party library like Underscore.js instead of Lodash
* Implementing a custom property removal or selection mechanism

However, these alternatives may not be as efficient or convenient as the Lodash functions, and are likely to add additional overhead to the test.

I hope this explanation helps!

Latest run results:

Run details: (Test run date: one month ago)

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:130.0) Gecko/20100101 Firefox/130.0

Browser/OS: Firefox 130 on Linux

View result in a separate tab

Test name	Executions per second
Native delete	1177802.6 Ops/sec
Lodash pick	863871.2 Ops/sec
Lodash omit	761461.0 Ops/sec

Related benchmarks:

Native delete vs Lodash omit vs Lodash pick - multiple properties (version: 0)

Comparing performance of: Native delete vs Lodash pick vs Lodash omit

Created: one year ago by: Guest

Jump to the latest result

Native delete

Lodash pick

Lodash omit

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):