Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
spread vs obj
(version: 0)
Comparing performance of:
spread vs ojb.ass
Created:
2 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var ad1 = { "Created": "2018-12-07T11:29:27.280903", "CreatedBy": "bartlomiej.dobrzanski", "ExecutionOrder": 0, "ProjectFieldId": "48ac40c7-c10d-4e08-b3c8-36d193e35a32", "Id": "bdc8542e-af1a-4ea6-b678-3878546ab403", "Modified": "2018-12-07T12:08:31.079469", "ModifiedBy": "bartlomiej.dobrzanski", "Name": "Property channel in column position", "SelectorType": "GetConfigProperty", "LogicParams": [{ "Created": "2018-11-02T16:11:36.987264", "CreatedBy": "bartlomiej.dobrzanski", "Expression": "FIND_BY=CHANNEL_IN_PRODUCT_POSITION", "ProjectFieldSelectorId": "bdc8542e-af1a-4ea6-b678-3878546ab403", "Id": "5a233867-6c9e-469c-b0b3-fe33052f1cb2", "Modified": "2018-12-07T11:54:06.912665", "ModifiedBy": "bartlomiej.dobrzanski", "Index": 0, "ID": "5a233867-6c9e-469c-b0b3-fe33052f1cb2", "displayName": "bdc8542e-af1a-4ea6-b678-3878546ab403", "isSelected": false, "isDirty": false, "isNew": false, "hasErrors": false, "errors": [] }, { "Created": "2018-12-07T11:29:57.872983", "CreatedBy": "bartlomiej.dobrzanski", "Expression": "REQUEST_CONTEXT=True", "ProjectFieldSelectorId": "bdc8542e-af1a-4ea6-b678-3878546ab403", "Id": "fbe49c0c-b66c-4337-9111-33353d724e41", "Modified": "2018-12-07T12:08:31.079469", "ModifiedBy": "bartlomiej.dobrzanski", "Index": 1, "ID": "fbe49c0c-b66c-4337-9111-33353d724e41", "displayName": "bdc8542e-af1a-4ea6-b678-3878546ab403", "isSelected": false, "isDirty": false, "isNew": false, "hasErrors": false, "errors": [] } ], "Index": 0, "ID": "bdc8542e-af1a-4ea6-b678-3878546ab403", "displayName": "Property channel in column position", "isSelected": false, "isDirty": false, "isNew": false, "hasErrors": false, "errors": [], "ConverterGroups": [], "FieldParams": [] }
Tests:
spread
const ad2 = {...ad1, displayName : 'aqq'};
ojb.ass
const ad2 = Object.assign(ad1, {displayName : 'aqq'});
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
spread
ojb.ass
Fastest:
N/A
Slowest:
N/A
Latest run results:
No previous run results
This benchmark does not have any results yet. Be the first one
to run it!
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'll break down the provided benchmark and explain what's being tested, the options compared, pros and cons of each approach, and other considerations. **Benchmark Definition JSON** The benchmark defines two test cases: 1. "spread" - This test case creates a new object `ad2` by using the spread operator (`...`) to copy all properties from an existing object `ad1`. The modified property `displayName` is set to `'aqq'`. 2. "ojb.ass" (I couldn't find any information on this option, so I'll assume it's a typo or an internal benchmark name). This test case creates a new object `ad2` by using the `Object.assign()` method to copy all properties from `ad1` and then adds a new property `displayName` with value `'aqq'`. **What's being tested** The benchmark is testing the performance of two approaches for copying an object: 1. Using the spread operator (`...`) 2. Using the `Object.assign()` method **Options compared** The two options are compared in terms of their execution time. **Pros and Cons of each approach** 1. **Spread Operator (`...`)**: * Pros: + Simple to read and write + Fast and efficient for small objects * Cons: + Not as widely supported in older browsers + Can lead to slower performance when dealing with large objects due to the need to create a new array 2. **Object.assign()**: * Pros: + Widely supported in older browsers + Can be used with arrays and other data structures * Cons: + More complex to read and write compared to the spread operator + May lead to slower performance due to the need to create a new object **Other considerations** The benchmark does not test the performance of each approach in isolation. Instead, it tests the combined effect of using one or both of these methods with an existing object. **Library and special JS features used** None of the provided code uses any external libraries or special JavaScript features (e.g., async/await, ES6 classes). **Alternatives** If you wanted to write a benchmark similar to this one, you could use other approaches for copying objects, such as: 1. Using `JSON.parse(JSON.stringify(obj))` 2. Creating a new object and setting its properties using dot notation 3. Using a custom function to copy the object's properties Keep in mind that each of these alternatives would have their own pros and cons, which should be considered when writing a benchmark.
Related benchmarks:
Date parse vs new Date inside sort
Ramda vs Vanilla - sort and add index
Lodash cloneDeep VS spread operator ts v1
hash-sum vs object-hashxxxxxx
Comments
Confirm delete:
Do you really want to delete benchmark?