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

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.

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.

Related benchmarks:

test123213 (version: 0)

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

Created: 7 years ago by: Guest

Jump to the latest result

lodash

Json string

deepCopy

angular Copy

infoDeepCopyWithNullCheck

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):