Benchmark: Lodash omit VS delete

HTML Preparation code:

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

Script Preparation code:

var MyObject = {
  description: 'a',
  myNumber: 123456789,
  myBoolean: true,
};

var myCopy = null;

Tests:

Lodash omit
_.omit(MyObject, 'myNumber');
delete
delete MyObject.myNumber;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash omit
delete

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.

**Overview of the Benchmark**

The provided JSON represents a JavaScript benchmark test case on MeasureThat.net. The test compares two approaches: `delete` and `_.omit()` from the Lodash library.

**What is being tested?**

Two test cases are defined:

1. `delete MyObject.myNumber;`: This test case uses the built-in `delete` keyword in JavaScript to delete a property from an object (`MyObject`). The purpose of this test case is to measure the performance difference between deleting a property using the `delete` keyword versus the Lodash library.
2. `_.omit(MyObject, 'myNumber');`: This test case uses the `_.omit()` function from the Lodash library to remove a property from an object (`MyObject`). The purpose of this test case is to measure the performance difference between using the Lodash library to remove a property versus the built-in `delete` keyword.

**Options compared**

The two options being compared are:

1. **Built-in delete**: Using the `delete` keyword in JavaScript to delete a property from an object.
2. **Lodash _.omit()**: Using the `_.omit()` function from the Lodash library to remove a property from an object.

**Pros and Cons of each approach:**

**Built-in delete**

Pros:

* Native JavaScript syntax, so no additional libraries are needed.
* Generally faster than using a library due to optimized engine implementations.
* Can be used with any JavaScript engine that supports it.

Cons:

* Only works on objects with properties that can be deleted (i.e., not symbols or getters).
* Requires explicit property names or paths.

**Lodash _.omit()**

Pros:

* Provides more flexibility in removing properties, such as using symbol keys or getter properties.
* Can handle cases where built-in `delete` fails (e.g., due to security restrictions).

Cons:

* Requires an additional library (Lodash) to be loaded and instantiated.
* May incur a slight performance overhead compared to the built-in `delete` keyword.

**Library used: Lodash**

Lodash is a popular JavaScript utility library that provides various functions for manipulating objects, arrays, and other data structures. In this case, the `_omit()` function is used to remove properties from an object. Lodash's `.omit()` function can handle a wide range of use cases, including removing properties using symbol keys or getter properties.

**Special JS feature/syntax**

There are no special JavaScript features or syntaxes being tested in these benchmark cases. The test only uses native JavaScript syntax and the `_.omit()` function from Lodash.

**Other alternatives**

If you need to remove properties from an object, other libraries or approaches can be used instead of Lodash's `_omit()`. Some examples include:

* Vanilla JavaScript with `Object.keys()` and `forEach()`
* Another utility library like Underscore.js
* A custom implementation using a different approach (e.g., using `JSON.parse(JSON.stringify(obj).replace(new RegExp('myNumber', 'g'), null))`)

Keep in mind that the performance differences between these approaches may vary depending on the specific use case and JavaScript engine being used.

Related benchmarks:

Lodash omit VS delete (version: 0)

Comparing performance of: Lodash omit vs delete

Created: 6 years ago by: Guest

Jump to the latest result

Lodash omit

delete

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):