Benchmark: Object Deep Copyit

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.10/lodash.js"></script> <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>

Script Preparation code:

function recursiveDeepCopy(obj) {
  return Object.keys(obj).reduce((v, d) => Object.assign(v, {
    [d]: (obj[d].constructor === Object) ? recursiveDeepCopy(obj[d]) : obj[d]
  }), {});
}

function jsonDeepCopy(o) {
  return JSON.parse(JSON.stringify(o));
}

function letscloneit(obj) {
	var clone, i;

	if (typeof obj !== 'object' || !obj)
		return obj;

	if (Array.isArray(obj)) {
		clone = [];
		var len = obj.length;
		for (i = 0; i < len; i++)
			clone[i] = letscloneit(obj[i]);
		return clone;
	}

	clone = {};
	for (i in obj)
		if (obj.hasOwnProperty(i))
			clone[i] = letscloneit(obj[i]);
	return clone;
}

var dimensions = [{
  "dimensions": [{
    "runtime": {
      "common": {
        "client": null,
        "server": null
      }
    }
  }, {
    "device": {
      "android": null,
      "blackberry": null,
      "iemobile": null,
      "iphone": null,
      "ipad": null,
      "kindle": null,
      "opera-mini": null,
      "palm": null
    }
  }, {
    "environment": {
      "development": {
        "dev": null,
        "test": null
      },
      "production": {
        "stage": null,
        "prod": null
      }
    }
  }, {
    "lang": {
      "ar": {
        "ar-JO": null,
        "ar-MA": null,
        "ar-SA": null,
        "ar-EG": null
      },
      "bn": {
        "bn-IN": null
      },
      "ca": {
        "ca-ES": null
      },
      "cs": {
        "cs-CZ": null
      },
      "da": {
        "da-DK": null
      },
      "de": {
        "de-AT": null,
        "de-DE": null
      },
      "el": {
        "el-GR": null
      },
      "en": {
        "en-AU": null,
        "en-BG": null,
        "en-CA": null,
        "en-GB": null,
        "en-GY": null,
        "en-HK": null,
        "en-IE": null,
        "en-IN": null,
        "en-MY": null,
        "en-NZ": null,
        "en-PH": null,
        "en-SG": null,
        "en-US": null,
        "en-ZA": null
      },
      "es": {
        "es-AR": null,
        "es-BO": null,
        "es-CL": null,
        "es-CO": null,
        "es-EC": null,
        "es-ES": null,
        "es-MX": null,
        "es-PE": null,
        "es-PY": null,
        "es-US": null,
        "es-UY": null,
        "es-VE": null
      },
      "fi": {
        "fi-FI": null
      },
      "fr": {
        "fr-BE": null,
        "fr-CA": null,
        "fr-FR": null,
        "fr-GF": null
      },
      "hi": {
        "hi-IN": null
      },
      "hu": {
        "hu-HU": null
      },
      "id": {
        "id-ID": null
      },
      "it": {
        "it-IT": null
      },
      "ja": {
        "ja-JP": null
      },
      "kn": {
        "kn-IN": null
      },
      "ko": {
        "ko-KR": null
      },
      "ml": {
        "ml-IN": null
      },
      "mr": {
        "mr-IN": null
      },
      "ms": {
        "ms-MY": null
      },
      "nb": {
        "nb-NO": null
      },
      "nl": {
        "nl-BE": null,
        "nl-NL": null,
        "nl-SR": null
      },
      "pl": {
        "pl-PL": null
      },
      "pt": {
        "pt-BR": null
      },
      "ro": {
        "ro-RO": null
      },
      "ru": {
        "ru-RU": null
      },
      "sv": {
        "sv-SE": null
      },
      "ta": {
        "ta-IN": null
      },
      "te": {
        "te-IN": null
      },
      "th": {
        "th-TH": null
      },
      "tr": {
        "tr-TR": null
      },
      "vi": {
        "vi-VN": null
      },
      "zh": {
        "zh-Hans": {
          "zh-Hans-CN": null
        },
        "zh-Hant": {
          "zh-Hant-HK": null,
          "zh-Hant-TW": null
        }
      }
    }
  }]
}]

Tests:

Recursive Deep Copy
var dimensionsCopy = recursiveDeepCopy(dimensions);
JSON Deep Copy
var dimensionsCopy = jsonDeepCopy(dimensions);
lodash clone
var dimensionsCopy = _.cloneDeep(dimensions);
letscloneit
var dimensionsCopy = letscloneit(dimensions);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Recursive Deep Copy
JSON Deep Copy
lodash clone
letscloneit

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):

LLMs can make mistakes. Check important info.

I'll do my best to analyze the provided JSON data and extract relevant information.

From the "RawUAString" field, it appears that all tests are run on the same browser (Chrome 72) and device platform (Desktop) with Mac OS X 10.14.1 operating system.

The test cases have varying execution rates per second:
- Recursive Deep Copy: 284,658.75 executions/second
- JSON Deep Copy: 46,821.27734375 executions/second
- letscloneit: 45,760.2421875 executions/second
- lodash clone: 27,233.248046875 executions/second

Comparing these rates, the order from fastest to slowest is:
1. JSON Deep Copy (46,821 executions/sec)
2. letscloneit (45,760 executions/sec)
3. lodash clone (27,233 executions/sec)
4. Recursive Deep Copy (284,658 executions/sec)

It appears that the tests are not as fast as expected, and the order of speed is different than what might be considered optimal.

Now, I can provide you with a suggestion on how to improve performance based on these results. However, please note that without more context or information about the implementation of each test function, it's difficult to offer a specific solution.

Do you want me to suggest some general improvements?

Latest run results:

Run details: (Test run date: 5 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.109 Safari/537.36

Browser/OS: Chrome 72 on Mac OS X 10.14.1

View result in a separate tab

Test name	Executions per second
Recursive Deep Copy	284658.8 Ops/sec
JSON Deep Copy	45760.2 Ops/sec
lodash clone	27233.2 Ops/sec
letscloneit	46821.3 Ops/sec

Related benchmarks:

Object Deep Copyit (version: 0)

Produce a deep copy of a Javascript object where nested objects are not simply references to the originals.

Comparing performance of: Recursive Deep Copy vs JSON Deep Copy vs lodash clone vs letscloneit

Created: 5 years ago by: Guest

Jump to the latest result

Recursive Deep Copy

JSON Deep Copy

lodash clone

letscloneit

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):