Benchmark: Ramda mergeRight vs object destructuring

HTML Preparation code:

<script src='https://cdn.jsdelivr.net/npm/ramda@0.27.1/dist/ramda.js'></script>

Script Preparation code:

var card = { a: 'value', b: 'value', slides: [{ prop: {} }], slidesUpcoming: [{ prop: {} }] };

Tests:

mergeRight
var card2 = R.mergeRight(card, { slides: [{ slide1: { value: 'prop'}}], slidesUpcoming: [{ slide1: { value: 'prop'}}] });
destr
var card2 = {...card, ...{ slides: [{ slide1: { value: 'prop'}}], slidesUpcoming: [{ slide1: { value: 'prop'}}] }};

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
mergeRight
destr

Fastest: N/A

Slowest: N/A

Latest 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 JSON to understand what's being tested in this JavaScript microbenchmark.

**Benchmark Overview**

The benchmark compares two approaches for merging objects: `Ramda.mergeRight` and object destructuring (using the spread operator `{...obj, ...newObj}`).

**Options Being Compared**

There are two options being compared:

1. **Ramda.mergeRight**: This is a function from the Ramda library that merges two objects together, with the second object's properties overriding those of the first.
2. **Object Destructuring (Spread Operator)**: This approach uses the spread operator `{...obj, ...newObj}` to merge two objects together, where `obj` and `newObj` are the two objects being merged.

**Pros and Cons**

Here are some pros and cons of each approach:

* **Ramda.mergeRight**:
	+ Pros:
		- More explicit and predictable behavior
		- Can be more efficient than object destructuring for large datasets
	+ Cons:
		- Requires the Ramda library to be included, which can add overhead
		- May not be as intuitive or familiar to developers without prior experience with Ramda
* **Object Destructuring (Spread Operator)**:
	+ Pros:
		- More concise and expressive syntax
		- No additional libraries required, making it a more lightweight approach
	+ Cons:
		- Can lead to unexpected behavior if not used carefully
		- May be slower than Ramda.mergeRight for very large datasets

**Library: Ramda**

The Ramda library is a popular functional programming library for JavaScript that provides a set of functional programming primitives. In this case, the `mergeRight` function is being used to merge two objects together.

**Special JS Feature/ Syntax**

There is no special JavaScript feature or syntax being tested in this benchmark. However, it's worth noting that object destructuring using the spread operator is a relatively new feature in JavaScript (introduced in ES6) and may not be supported in older browsers or environments.

**Other Alternatives**

If you're interested in exploring other alternatives to Ramda.mergeRight or object destructuring, here are a few options:

* **Lodash.merge**: Lodash is another popular library for functional programming in JavaScript that provides a `merge` function similar to Ramda.mergeRight.
* **Object.assign()**: This is the built-in method for merging objects in modern JavaScript. However, it has some differences in behavior compared to Ramda.mergeRight or object destructuring.
* **Immutable.js merge**: Immutable.js is another library that provides a way to create immutable data structures, including merging two objects together.

I hope this explanation helps you understand what's being tested in this JavaScript microbenchmark!

Related benchmarks:

Ramda mergeRight vs object destructuring (version: 0)

Comparing performance of: mergeRight vs destr

Created: 4 years ago by: Guest

Jump to the latest result

mergeRight

destr

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):