Benchmark: Object merge testing

HTML Preparation code:

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

Tests:

lodash merge
var a = {"retweeted":false,"porn":false,"mentioned":0,"retweetable":true,"id":1408967479,"favorite_count":0,"is_unread":1,"favorers":[],"user_id":10208633,"type":0,"bookmark":false,"coins":0,"publish_to_followers":true,"content":"line常用貼圖 ,沒有跟到活動 <img src=\"https://gif\" class=\"emoticon\" alt=\"(rofl)\" /> <a href=\"https://png\" class=\"ex_link pictureservices\" rel=\"nofollow\"><img src=\"https://jpg\" alt=\"https://png\" height=\"48\"></a> <a href=\"https://png\" class=\"ex_link pictureservices\" rel=\"nofollow\"><img src=\"https://jpg\" alt=\"https://png\" height=\"48\"></a> 但應該都是這樣","retweet_id":null,"excluded":null,"has_gift":false,"owner_id":10208633,"responses_seen":0,"qualifier":":","tweet_id":1408967479,"response_count":1,"retweeters_count":0,"anonymous":false,"last_edited":null,"limited_to":null,"no_comments":0,"posted":"Tue, 30 Apr 2019 04:20:50 GMT","lang":"en","content_raw":"line常用貼圖 ,沒有跟到活動 (rofl) \n 但應該都是這樣","retweeters":[],"favorite":false,"responded":0,"trans_qualifier":":"}; var b = {"retweeted":false,"porn":false,"mentioned":0,"retweetable":true,"id":1408967479,"favorite_count":0,"is_unread":0,"favorers":[],"user_id":13961847,"type":0,"bookmark":false,"coins":0,"publish_to_followers":true,"content":"line常用貼圖 ,沒有跟到活動 <img src=\"https://gif\" class=\"emoticon\" alt=\"(rofl)\" /> <a href=\"https://png\" class=\"ex_link pictureservices\" rel=\"nofollow\"><img src=\"https://jpg\" alt=\"https://png\" height=\"48\"></a> <a href=\"https://png\" class=\"ex_link pictureservices\" rel=\"nofollow\"><img src=\"https://jpg\" alt=\"https://png\" height=\"48\"></a> 但應該都是這樣","retweet_id":null,"excluded":null,"has_gift":false,"owner_id":10208633,"responses_seen":0,"qualifier":":","tweet_id":1408967479,"response_count":1,"retweeters_count":0,"anonymous":false,"last_edited":null,"limited_to":null,"no_comments":0,"posted":"Tue, 30 Apr 2019 04:20:50 GMT","lang":"en","content_raw":"line常用貼圖 ,沒有跟到活動 (rofl) \n 但應該都是這樣","retweeters":[],"favorite":false,"responded":0,"trans_qualifier":":"}; var c = _.merge(a, b);
object.assign
var a = {"retweeted":false,"porn":false,"mentioned":0,"retweetable":true,"id":1408967479,"favorite_count":0,"is_unread":1,"favorers":[],"user_id":10208633,"type":0,"bookmark":false,"coins":0,"publish_to_followers":true,"content":"line常用貼圖 ,沒有跟到活動 <img src=\"https://gif\" class=\"emoticon\" alt=\"(rofl)\" /> <a href=\"https://png\" class=\"ex_link pictureservices\" rel=\"nofollow\"><img src=\"https://jpg\" alt=\"https://png\" height=\"48\"></a> <a href=\"https://png\" class=\"ex_link pictureservices\" rel=\"nofollow\"><img src=\"https://jpg\" alt=\"https://png\" height=\"48\"></a> 但應該都是這樣","retweet_id":null,"excluded":null,"has_gift":false,"owner_id":10208633,"responses_seen":0,"qualifier":":","tweet_id":1408967479,"response_count":1,"retweeters_count":0,"anonymous":false,"last_edited":null,"limited_to":null,"no_comments":0,"posted":"Tue, 30 Apr 2019 04:20:50 GMT","lang":"en","content_raw":"line常用貼圖 ,沒有跟到活動 (rofl) \n 但應該都是這樣","retweeters":[],"favorite":false,"responded":0,"trans_qualifier":":"}; var b = {"retweeted":false,"porn":false,"mentioned":0,"retweetable":true,"id":1408967479,"favorite_count":0,"is_unread":0,"favorers":[],"user_id":13961847,"type":0,"bookmark":false,"coins":0,"publish_to_followers":true,"content":"line常用貼圖 ,沒有跟到活動 <img src=\"https://gif\" class=\"emoticon\" alt=\"(rofl)\" /> <a href=\"https://png\" class=\"ex_link pictureservices\" rel=\"nofollow\"><img src=\"https://jpg\" alt=\"https://png\" height=\"48\"></a> <a href=\"https://png\" class=\"ex_link pictureservices\" rel=\"nofollow\"><img src=\"https://jpg\" alt=\"https://png\" height=\"48\"></a> 但應該都是這樣","retweet_id":null,"excluded":null,"has_gift":false,"owner_id":10208633,"responses_seen":0,"qualifier":":","tweet_id":1408967479,"response_count":1,"retweeters_count":0,"anonymous":false,"last_edited":null,"limited_to":null,"no_comments":0,"posted":"Tue, 30 Apr 2019 04:20:50 GMT","lang":"en","content_raw":"line常用貼圖 ,沒有跟到活動 (rofl) \n 但應該都是這樣","retweeters":[],"favorite":false,"responded":0,"trans_qualifier":":"}; var c = Object.assign(a, b);
spread
var a = {"retweeted":false,"porn":false,"mentioned":0,"retweetable":true,"id":1408967479,"favorite_count":0,"is_unread":1,"favorers":[],"user_id":10208633,"type":0,"bookmark":false,"coins":0,"publish_to_followers":true,"content":"line常用貼圖 ,沒有跟到活動 <img src=\"https://gif\" class=\"emoticon\" alt=\"(rofl)\" /> <a href=\"https://png\" class=\"ex_link pictureservices\" rel=\"nofollow\"><img src=\"https://jpg\" alt=\"https://png\" height=\"48\"></a> <a href=\"https://png\" class=\"ex_link pictureservices\" rel=\"nofollow\"><img src=\"https://jpg\" alt=\"https://png\" height=\"48\"></a> 但應該都是這樣","retweet_id":null,"excluded":null,"has_gift":false,"owner_id":10208633,"responses_seen":0,"qualifier":":","tweet_id":1408967479,"response_count":1,"retweeters_count":0,"anonymous":false,"last_edited":null,"limited_to":null,"no_comments":0,"posted":"Tue, 30 Apr 2019 04:20:50 GMT","lang":"en","content_raw":"line常用貼圖 ,沒有跟到活動 (rofl) \n 但應該都是這樣","retweeters":[],"favorite":false,"responded":0,"trans_qualifier":":"}; var b = {"retweeted":false,"porn":false,"mentioned":0,"retweetable":true,"id":1408967479,"favorite_count":0,"is_unread":0,"favorers":[],"user_id":13961847,"type":0,"bookmark":false,"coins":0,"publish_to_followers":true,"content":"line常用貼圖 ,沒有跟到活動 <img src=\"https://gif\" class=\"emoticon\" alt=\"(rofl)\" /> <a href=\"https://png\" class=\"ex_link pictureservices\" rel=\"nofollow\"><img src=\"https://jpg\" alt=\"https://png\" height=\"48\"></a> <a href=\"https://png\" class=\"ex_link pictureservices\" rel=\"nofollow\"><img src=\"https://jpg\" alt=\"https://png\" height=\"48\"></a> 但應該都是這樣","retweet_id":null,"excluded":null,"has_gift":false,"owner_id":10208633,"responses_seen":0,"qualifier":":","tweet_id":1408967479,"response_count":1,"retweeters_count":0,"anonymous":false,"last_edited":null,"limited_to":null,"no_comments":0,"posted":"Tue, 30 Apr 2019 04:20:50 GMT","lang":"en","content_raw":"line常用貼圖 ,沒有跟到活動 (rofl) \n 但應該都是這樣","retweeters":[],"favorite":false,"responded":0,"trans_qualifier":":"}; var c = { ...a, ...b };

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash merge
object.assign
spread

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 28 days ago):

LLMs can make mistakes. Check important info.

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36

Browser/OS: Chrome 73 on Mac OS X 10.14.4

View result in a separate tab

Test name	Executions per second
lodash merge	330251.1 Ops/sec
object.assign	1164854.5 Ops/sec
spread	293499.7 Ops/sec

Related benchmarks:

Object merge testing (version: 0)

Comparing performance of: lodash merge vs object.assign vs spread

Created: 5 years ago by: Guest

Jump to the latest result

lodash merge

object.assign

spread

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 28 days ago):