Benchmark: omit vs native delete

HTML Preparation code:

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

Script Preparation code:

const obj = {
    test: 1,
    test2: 2
}

Tests:

native delete
const obj = { test: 1, test2: 2 } delete obj.test
omit
const obj = { test: 1, test2: 2 } _.omit(obj,['test'])

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
native delete
omit

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 benchmark and explain what's being tested.

**Benchmark Overview**

The benchmark compares two approaches to deleting properties from an object:

1. Native `delete` operator
2. Lodash's `_omit` function with an array of property names to omit

**Options Compared**

* **Native Delete**: The native `delete` operator is a built-in JavaScript feature that allows you to delete properties from objects. It returns `undefined` if the property does not exist.
* **Lodash's _omit**: Lodash is a popular utility library for JavaScript. `_omit` function takes an object and an array of property names as arguments, and returns a new object with the specified properties removed.

**Pros and Cons**

* **Native Delete**
	+ Pros:
		- Built-in feature, so no additional dependencies required.
		- Generally faster since it doesn't require a library call.
	+ Cons:
		- May not be supported in older browsers or versions of JavaScript.
		- Can lead to unexpected behavior if used incorrectly (e.g., deleting multiple properties at once).
* **Lodash's _omit**
	+ Pros:
		- Widely supported and compatible with most modern browsers and versions of JavaScript.
		- Provides a more explicit way of removing properties, reducing the risk of unexpected behavior.
	+ Cons:
		- Requires including an additional library (Lodash) in your project.
		- May be slightly slower due to the extra function call.

**Library: Lodash**

Lodash is a popular utility library for JavaScript that provides a wide range of functions for common tasks, such as:

* Array manipulation
* Object transformation
* String manipulation
* Function execution

In this benchmark, Lodash's `_omit` function is used to remove properties from an object. The `_omit` function takes two arguments: the object to modify and an array of property names to omit.

**Special JS Feature: No special features are mentioned in the provided benchmark definition.**

**Other Alternatives**

If you don't want to use Lodash's `_omit`, there are other ways to remove properties from an object:

* Using a `for...in` loop with an explicit delete statement: `for (var prop in obj) { if (obj.hasOwnProperty(prop)) delete obj[prop]; }`
* Using a library like underscore.js or es6-objects
* Implementing your own implementation of `_omit`

It's worth noting that the choice of approach ultimately depends on your specific use case and requirements. If you need to remove properties from an object frequently, using Lodash's `_omit` might be the most convenient option. However, if you're working with a legacy environment or prefer not to include an additional library, the native `delete` operator or alternative implementation methods can still get the job done.

Related benchmarks:

omit vs native delete (version: 0)

Comparing performance of: native delete vs omit

Created: 3 years ago by: Guest

Jump to the latest result

native delete

omit

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):