Benchmark: Native delete vs Lodash omit - 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 omit and pick
return { message: _.pick(data, ['message', 'msg1', 'msg2', 'msg3']), meta: _.omit(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 omit and pick
Lodash omit

Fastest: N/A

Slowest: N/A

Latest run results:

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

LLMs can make mistakes. Check important info.

Let's break down the benchmark definition and test cases to understand what's being tested.

**Overview**

The benchmark compares three approaches to delete properties from an object:

1. Native JavaScript delete operator (`delete`)
2. Lodash's `omit` function with multiple property deletions
3. A combination of Lodash's `pick` and `omit` functions

**Options Compared**

The benchmark tests the performance of each approach in the following scenarios:

* Deleting individual properties from an object using `delete`
* Deleting multiple properties from an object using `delete`
* Using Lodash's `omit` function to delete multiple properties from an object
* Using a combination of Lodash's `pick` and `omit` functions to delete multiple properties from an object

**Pros and Cons**

Here are the pros and cons of each approach:

1. **Native JavaScript delete operator (`delete`)**:
	* Pros: Simple, lightweight, and language-agnostic.
	* Cons: Can be slower due to the need for garbage collection and property lookup.
2. **Lodash's `omit` function**:
	* Pros: Provides a concise and expressive way to delete multiple properties from an object.
	* Cons: Adds dependency on Lodash library, which may introduce additional overhead.
3. **Combination of Lodash's `pick` and `omit` functions**:
	* Pros: Offers flexibility in selecting specific properties to keep or delete.
	* Cons: Requires more code and setup compared to the native `delete` operator.

**Library Usage**

Lodash is a popular JavaScript utility library that provides various functions for data manipulation, string manipulation, and other tasks. In this benchmark, Lodash's `omit` function is used to delete multiple properties from an object. The `pick` function is not directly used in the provided benchmark definition, but it would be used if the goal was to select specific properties to keep.

**Special JS Features/Syntax**

None of the test cases use special JavaScript features or syntax that requires explanation.

**Alternative Approaches**

Other approaches to delete properties from an object include:

1. Using a `for...in` loop and manual property deletion.
2. Utilizing libraries like Object.keys() and Array.prototype.filter().
3. Employing more advanced techniques, such as using WeakMaps for efficient property deletion.

These alternatives may offer different performance characteristics or trade-offs in terms of code complexity and dependency on external libraries.

Keep in mind that this is not an exhaustive list, and the choice of approach ultimately depends on the specific use case, personal preference, and performance requirements.

Related benchmarks:

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

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

Created: 3 years ago by: Guest

Jump to the latest result

Native delete

Lodash omit and pick

Lodash 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):