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Ramda mergeRight vs spread
(version: 0)
Benchmark.js
Comparing performance of:
Spread vs Ramda mergeRight
Created:
3 years ago
by:
Guest
Go to the latest result
HTML Preparation code:
<script src='https://cdnjs.cloudflare.com/ajax/libs/ramda/0.28.0/ramda.min.js'></script>
Tests:
Spread
var a = { a: 'oh', b: 'my' }; var b = { c: 'goddess' }; var c = { ...a, ...b };
Ramda mergeRight
var a = { a: 'oh', b: 'my' }; var b = { c: 'goddess' }; var c = R.mergeRight(a, b);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
Spread
Ramda mergeRight
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
2 years ago
)
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 YaBrowser/24.4.0.0 Safari/537.36
Browser/OS:
Yandex Browser 24 on Linux
View result in a separate tab
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=523492" width="100%" height="500px"></iframe>
Spread
12.9M/s
Ramda mergeRight
3.3M/s
View exact numbers
Test name
Executions per second
✓
Spread
12,852,269 Ops/sec
Ramda mergeRight
3,270,756 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'd be happy to explain what's being tested in the provided benchmark. The benchmark is comparing two approaches: using the spread operator (`...`) and using the `mergeRight` function from the Ramda library to merge two objects. **Using the spread operator (`...`):** This approach involves creating a new object by spreading the properties of one or more source objects into it. The syntax looks like this: ```javascript var c = { ...a, ...b }; ``` The pros of using the spread operator are: * It's concise and easy to read. * It works with any type of object that supports spreads (i.e., most JavaScript objects). However, there are some potential downsides: * The spread operator is only available in ECMAScript 2015 (ES6) and later versions. If you're targeting an older browser or environment, you may need to use a polyfill or alternative method. * Using the spread operator can lead to slower performance compared to other methods, especially for large objects. **Using `mergeRight` from Ramda:** The `mergeRight` function is part of the Ramda library and allows you to merge two objects into a new object, with the second object's properties overriding the first object's properties. The syntax looks like this: ```javascript var c = R.mergeRight(a, b); ``` The pros of using `mergeRight` are: * It provides more control over the merging process, as you can specify which properties to override. * It works with any type of object that supports Ramda's merge functions. However, there are some potential downsides: * The library is external and needs to be included in your script (as shown in the benchmark code). * Using `mergeRight` may require more boilerplate code compared to using the spread operator. **Other alternatives:** There are other ways to merge objects in JavaScript, such as using `Object.assign()` or a custom implementation. However, these methods may not provide the same level of conciseness and ease-of-use as the spread operator or `mergeRight` from Ramda. In terms of special JavaScript features or syntax, there isn't anything that stands out here. The benchmark is focused on comparing two specific approaches to merging objects.
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