Benchmark: aaaaaa - MeasureThat.net

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: 'Creates a deep copy of source, which should be an object or an array.',
  myNumber: 123456789,
  myBoolean: true,
  jayson: {
    stringify: 'JSON.stringify() method converts a JavaScript value to a JSON string....',
    parse: 'JSON.parse() method parses a JSON string...'
  }
},
               {
  description: 'Creates a deep copy of source, which should be an object or an array.',
  myNumber: 123456789,
  myBoolean: true,
  jayson: {
    stringify: 'JSON.stringify() method converts a JavaScript value to a JSON string....',
    parse: 'JSON.parse() method parses a JSON string...'
  }
},{
  description: 'Creates a deep copy of source, which should be an object or an array.',
  myNumber: 123456789,
  myBoolean: true,
  jayson: {
    stringify: 'JSON.stringify() method converts a JavaScript value to a JSON string....',
    parse: 'JSON.parse() method parses a JSON string...'
  }
},{
  description: 'Creates a deep copy of source, which should be an object or an array.',
  myNumber: 123456789,
  myBoolean: true,
  jayson: {
    stringify: 'JSON.stringify() method converts a JavaScript value to a JSON string....',
    parse: 'JSON.parse() method parses a JSON string...'
  }
}];

var myCopy = null;

Tests:

a
myCopy = _.cloneDeep(MyObject);
b
myCopy = JSON.parse(JSON.stringify(MyObject));
c
myCopy = {...MyObject}

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
a
b
c

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):

LLMs can make mistakes. Check important info.

I'll break down the provided benchmark definition and test cases, explaining what's being tested, the options compared, pros and cons of each approach, and other considerations.

**Benchmark Definition JSON**

The benchmark definition represents a JavaScript function that creates a deep copy of an object using three different methods:

1. `_.cloneDeep(MyObject)`
2. `JSON.parse(JSON.stringify(MyObject))`
3. `{...MyObject}` (using the spread operator)

These functions are compared to measure their performance.

**Individual Test Cases**

Each test case represents a single benchmark, with the following characteristics:

* **Test Name**: A unique identifier for the benchmark.
* **Benchmark Definition**: The JavaScript code that creates a deep copy of the `MyObject` using one of the three methods listed above.
* **Script Preparation Code**: Additional JavaScript code that sets up the environment for the benchmark. In this case, it initializes an object called `MyObject` with some properties.

**What's being tested**

The benchmark is testing the performance of three different methods for creating a deep copy of an object:

1. Using Lodash's `cloneDeep` function.
2. Using `JSON.parse(JSON.stringify(MyObject))`.
3. Using the spread operator (`{...MyObject}`).

These methods are compared to determine which one is fastest.

**Pros and Cons of each approach**

Here's a brief overview of the pros and cons of each approach:

1. **Lodash's `cloneDeep` function**: This method is designed specifically for creating deep copies of objects and arrays. It's usually fast and reliable, but may have dependencies on external libraries.
	* Pros: Fast, reliable, and well-maintained.
	* Cons: May require an extra dependency (Lodash).
2. **JSON.parse(JSON.stringify(MyObject))**: This method is a built-in JavaScript function that converts an object to a JSON string and then parses it back into an object. However, this method can be slow for large objects because it has to serialize and deserialize the entire object.
	* Pros: Built-in JavaScript function, no dependencies required.
	* Cons: Can be slow for large objects due to serialization and deserialization.
3. **Spread operator (`{...MyObject}`)**: This method is a relatively recent addition to JavaScript (introduced in ES6) that creates a new object by spreading the properties of an existing object. It's generally fast but may not work as expected if the object has complex nested structures.
	* Pros: Fast, modern and widely adopted syntax.
	* Cons: May not work correctly for all types of objects.

**Other considerations**

Some additional considerations when evaluating these approaches:

* **Memory usage**: The spread operator method is likely to use less memory than the `cloneDeep` function or `JSON.parse(JSON.stringify(MyObject))`, since it creates a new object without copying the entire original object.
* **Type safety**: The `cloneDeep` function returns an exact copy of the original object, while the spread operator method may create a shallow copy if the original object has complex nested structures.

**Alternatives**

If you want to test other approaches for creating deep copies of objects, some alternatives could be:

* Using a library like `immer` or `refetch` that provides more efficient and type-safe ways to create deep copies.
* Implementing your own custom deep copy function using bitwise operations or recursive functions.
* Testing alternative methods like `Object.assign()` or `Array.prototype.slice()` for creating shallow copies.

Related benchmarks:

aaaaaa (version: 0)

aaaa

Comparing performance of: a vs b vs c

Created: 5 years ago by: Guest

Jump to the latest result

a

b

c

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):