Benchmark: Omit Vs Native Delete - Objects Pre-Initialized

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' };
meta = Object.assign({}, data);

Tests:

Native delete
delete meta.message; return { message: data.message, meta }
Lodash omit
return { message: data.message, meta: _.omit(data, 'message') }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Native delete
Lodash omit

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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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 test cases.

**Benchmark Definition JSON**

The benchmark is defined in the `JSON` object as follows:

* **Name**: The name of the benchmark, which is "Omit Vs Native Delete - Objects Pre-Initialized".
* **Description**: An empty string, indicating that no description is provided for this benchmark.
* **Script Preparation Code**: A script that initializes an object `data` with two properties: `abf` and `message`, and then assigns the result to a variable `meta`. This code is used to prepare the data for the benchmark. The `Object.assign()` function is used to create a shallow copy of the `data` object, which is stored in the `meta` variable.
* **Html Preparation Code**: A script tag that includes the Lodash library version 4.17.5, which will be used by one of the test cases.

**Test Cases**

The benchmark consists of two individual test cases:

1. **Native delete**
	* **Benchmark Definition**: The code that defines the benchmark for the "Native delete" case. It uses the `delete` keyword to delete the `message` property from the `meta` object, and then returns an object with the same `data` object but without the deleted property.
2. **Lodash omit**
	* **Benchmark Definition**: The code that defines the benchmark for the "Lodash omit" case. It uses the `_omit()` function from the Lodash library to remove the `message` property from the `data` object, and then returns an object with the same `data` object but without the deleted property.

**Options Compared**

The two test cases compare the performance of:

1. **Native delete**: Using the built-in `delete` keyword to delete properties from an object.
2. **Lodash omit**: Using the `_omit()` function from Lodash to remove properties from an object.

**Pros and Cons**

* **Native delete**:
	+ Pros: Simple, lightweight, and widely supported by JavaScript engines.
	+ Cons: Can be slower due to the overhead of garbage collection, especially when dealing with large objects.
* **Lodash omit**:
	+ Pros: More efficient than native `delete` for large objects, as it avoids the overhead of garbage collection. Additionally, Lodash provides other useful functions for object manipulation.
	+ Cons: Requires an additional library to be included, which can increase the benchmark's overall size.

**Other Considerations**

* The use of a pre-initialized object (`data`) and its shallow copy (`meta`) allows the benchmark to focus on the performance difference between `delete` and `_omit()`.
* The inclusion of Lodash as a dependency in the HTML preparation code ensures that both test cases are executed with the same library version.

**Special JS Features/Syntax**

There is no special JavaScript feature or syntax used in this benchmark. Both test cases only rely on standard JavaScript features, such as object creation and property deletion.

**Alternatives**

For those interested in exploring alternative approaches to this benchmark:

1. **Manual property deletion**: Implementing manual property deletion without using the `delete` keyword or Lodash.
2. **Object.clearProperty()**: Using the `Object.clearProperty()` method to delete properties from an object, which is supported by some JavaScript engines.
3. **Other library-based approaches**: Experimenting with other libraries or frameworks that provide efficient property deletion methods, such as React or Angular.

These alternatives can help further explore performance differences and provide a more comprehensive understanding of the topic.

Related benchmarks:

Omit Vs Native Delete - Objects Pre-Initialized (version: 0)

Comparing performance of: Native delete vs Lodash omit

Created: 3 years ago by: Guest

Jump to the latest result

Native delete

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):