Benchmark: test123213 - MeasureThat.net

HTML Preparation code:

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script src="//cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.7.2/angular.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...'
  },
  functioada:function(){alert("testtt")}
};

var myCopy = null;

   function deepCopy(object) {
         // if not array or object or is null return self
         if (typeof object !== 'object' || object == null) {
            return object;
        }
        var newObject;
        // handle case: array
        if (object instanceof Array) {
            newObject = [];
            for (var index = 0, length = object.length; index < length; index++) {
                newObject[index] = deepCopy(object[index]);
            }
            return newObject;
        }
        // handle case: object
        newObject = {};
        for (var property in object) {
            if (object.hasOwnProperty(property)) {
                newObject[property] = deepCopy(object[property]);
            }
        }
        return newObject;
    }
    function infoDeepCopyWithNullCheck(copyItem) {
        if ($.isPlainObject(copyItem)) {
            return $.extend(true, {}, copyItem);
        }
        return _.cloneDeep(copyItem);
    }

Tests:

lodash
myCopy = _.cloneDeep(MyObject);
Json string
myCopy = JSON.parse(JSON.stringify(MyObject));
deepCopy
myCopy = deepCopy(MyObject);
angular Copy
myCopy = angular.copy(MyObject);
infoDeepCopyWithNullCheck
myCopy = infoDeepCopyWithNullCheck(MyObject);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash
Json string
deepCopy
angular Copy
infoDeepCopyWithNullCheck

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmarking scenario.

**Benchmark Definition JSON**

The provided JSON represents a benchmark definition, which includes:

1. **Script Preparation Code**: This code sets up an object `MyObject` with various properties, including arrays and nested objects. It also defines a `deepCopy` function.
2. **Html Preparation Code**: These scripts load external libraries:
	* jQuery
	* Lodash (a utility library)
	* AngularJS

**Individual Test Cases**

Each test case consists of a single line of code that creates a copy of the `MyObject`. The tests compare different approaches:

1. **`myCopy = _.cloneDeep(MyObject);`**: Uses Lodash's `cloneDeep` function to create a deep copy of `MyObject`.
2. **`myCopy = JSON.parse(JSON.stringify(MyObject));`**: Uses JSON parsing and stringification to create a deep copy of `MyObject`. This approach is not recommended, as it can lead to issues with circular references.
3. **`myCopy = deepCopy(MyObject);`**: Defines the custom `deepCopy` function (see Script Preparation Code) to create a deep copy of `MyObject`.
4. **`myCopy = angular.copy(MyObject);`**: Uses AngularJS's `copy` function to create a shallow copy of `MyObject`. Note that this is not suitable for creating a deep copy.
5. **`myCopy = infoDeepCopyWithNullCheck(MyObject);`**: Uses a custom function (not shown in the provided code) to create a deep copy of `MyObject`.

**Pros and Cons**

Here's a brief overview of each approach:

1. **Lodash (`_.cloneDeep`)**
	* Pros: Efficient, widely supported, and easy to use.
	* Cons: May not be suitable for very large objects due to memory limitations.
2. **JSON parsing (`JSON.parse(JSON.stringify())`)**:
	* Pros: Simple and widely supported.
	* Cons: Can lead to issues with circular references, may not work as expected in all browsers.
3. **Custom `deepCopy` function**
	* Pros: Tailored for specific use cases, efficient, and controlled.
	* Cons: Requires custom implementation and debugging expertise.
4. **AngularJS (`angular.copy`)**
	* Pros: Simple to implement, widely supported.
	* Cons: Only suitable for shallow copies; not ideal for deep copies.
5. **`infoDeepCopyWithNullCheck` function**
	* Pros: Customizable, efficient (as per implementation).
	* Cons: Requires custom implementation and debugging expertise.

**Other Considerations**

When choosing a copy function, consider the following:

* **Object size**: For very large objects, more lightweight approaches like Lodash's `cloneDeep` or a custom `deepCopy` function might be necessary to avoid memory issues.
* **Browser support**: Ensure the chosen approach is supported by the target browsers.
* **Performance**: Compare performance metrics for different approaches to determine the most efficient solution.

**Alternatives**

Some alternative copy functions you might consider include:

* **ES6 spread operator (`{...obj}`)**: Creates a shallow copy of an object, not suitable for deep copies.
* **`Object.assign()`**: Creates a shallow copy of an object, not suitable for deep copies.
* **`Array.prototype.slice()`**: Creates a shallow copy of an array, not suitable for deep copies.

Keep in mind that the choice of copy function ultimately depends on your specific use case and requirements.

Latest run results:

Run details: (Test run date: 6 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; Touch; rv:11.0) like Gecko

Browser/OS: IE 11 on Windows

View result in a separate tab

Test name	Executions per second
lodash	122439.2 Ops/sec
Json string	201017.1 Ops/sec
deepCopy	432940.1 Ops/sec
angular Copy	202217.4 Ops/sec
infoDeepCopyWithNullCheck	231853.4 Ops/sec

Related benchmarks:

test123213 (version: 0)

Comparing performance of: lodash vs Json string vs deepCopy vs angular Copy vs infoDeepCopyWithNullCheck

Created: 6 years ago by: Guest

Jump to the latest result

lodash

Json string

deepCopy

angular Copy

infoDeepCopyWithNullCheck

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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