Benchmark: Object assign vs loadash clone 1

HTML Preparation code:

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

Script Preparation code:

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

Tests:

lodash
myCopy = _.clone(MyObject);
Object assign
myCopy = Object.assign({}, MyObject);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash
Object assign

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 provided benchmark definition and test cases to understand what's being tested.

**Benchmark Definition**

The benchmark is testing two approaches:

1. **Object Assign**: This method uses the `Object.assign()` function to create a copy of the original object (`MyObject`).
2. **Lodash Clone**: This method uses the `_clone()` function from the Lodash library to create a deep copy of the original object.

**Options Compared**

The benchmark is comparing the performance of these two approaches on the same test case, with identical input data:

* `myCopy`: an empty object (`null`) that will be populated with properties from `MyObject` using both methods.
* `MyObject`: a JavaScript object with three properties: `description`, `myNumber`, and `myBoolean`.

**Pros and Cons**

1. **Object Assign**
	* Pros:
		+ Simple to understand and implement.
		+ Works well for small objects.
	* Cons:
		+ Can be slower for large objects due to the overhead of function calls and array creation.
		+ May not preserve all properties (e.g., if `MyNumber` is a number with a fractional part, it might be truncated).
2. **Lodash Clone**
	* Pros:
		+ Preserves all properties, including numeric ones.
		+ Can handle large objects efficiently due to Lodash's optimized implementation.
	* Cons:
		+ Requires an external library (Lodash), which may add overhead.
		+ May have a slightly higher memory footprint.

**Library and Purpose**

The `lodash` library is a popular utility library for JavaScript that provides various functional programming helpers, including the `_clone()` function. The `_clone()` function creates a deep copy of an object, recursively cloning all properties and arrays within it.

**Special JS Feature or Syntax**

There doesn't seem to be any special JS feature or syntax being used in this benchmark. Both approaches rely on standard JavaScript features and libraries (Lodash).

**Other Considerations**

When running benchmarks like these, it's essential to consider factors that might affect performance, such as:

* Cache locality: Some browsers may optimize for cache-friendly access patterns.
* Garbage collection: The frequency and behavior of garbage collection can impact performance.
* Context switching: Switching between different JavaScript contexts (e.g., due to concurrent execution) can introduce overhead.

**Other Alternatives**

If you're interested in exploring alternative approaches, here are a few options:

1. **For...in loop**: Instead of using `Object.assign()` or Lodash's `_clone()`, you could use a `for...in` loop to iterate over the object's properties and create a copy manually.
2. **Spread operator (`...`)**: You can use the spread operator (`...`) to create a shallow copy of an object.
3. **JSON.parse(JSON.stringify())**: This method creates a deep copy of an object using JSON serialization and deserialization.

Keep in mind that each alternative has its pros and cons, and may not be suitable for all scenarios.

Related benchmarks:

Object assign vs loadash clone 1 (version: 0)

Comparing performance of: lodash vs Object assign

Created: 2 years ago by: Registered User

Jump to the latest result

lodash

Object assign

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):