Benchmark: R.isEmpty vs !!Object.keys().length

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/ramda/0.28.0/ramda.min.js"></script>

Script Preparation code:

window.obj = {};

for (var i = 0, len = 100; i < len; i++) {
  obj['key' + i] = 'value' + i;
}

Tests:

R
R.isEmpty(window.obj);
vanilla
!!Object.keys(window.obj).length;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
R
vanilla

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 benchmark and explain what's being tested.

**Benchmark Definition:**
The benchmark is comparing two approaches to detect if an object is empty:

1. `R.isEmpty(window.obj);` (using Ramda library)
2. `!!Object.keys(window.obj).length;` (vanilla JavaScript)

Both approaches aim to determine if the object `window.obj` has any keys.

**Options being compared:**

* **Ramda's `isEmpty` function:** This is a higher-order function that takes an object as input and returns a boolean indicating whether the object is empty. Ramda is a functional programming library for JavaScript.
* **Vanilla JavaScript approach:** This uses the unary negation operator `!!` to coerce the result of `Object.keys(window.obj).length` to a boolean value. If the length of the keys is 0, the expression will evaluate to `true`, indicating an empty object.

**Pros and Cons:**

* **Ramda's `isEmpty` function:**
	+ Pros:
		- Concise and readable code.
		- No need to worry about edge cases or undefined values.
	+ Cons:
		- Requires the Ramda library, which might not be included in all environments.
		- Might have a performance overhead due to the extra function call.
* **Vanilla JavaScript approach:**
	+ Pros:
		- Lightweight and doesn't require any additional libraries.
		- Familiar syntax for many developers.
	+ Cons:
		- More verbose code, which might lead to errors or readability issues if not handled carefully.
		- Can be less efficient due to the coercion operation.

**Library:**
The `isEmpty` function is part of the Ramda library. Ramda provides a set of functional programming utilities for JavaScript, including functions for data manipulation, transformation, and validation.

**Special JS feature/syntax:**
There's no special JavaScript feature or syntax used in this benchmark, as it only involves basic object manipulation and comparison operators.

**Other alternatives:**

* If you prefer not to use Ramda, other libraries like Lodash or Jest provide similar functionality for functional programming tasks.
* For a more lightweight approach, you could use the vanilla JavaScript `in` operator instead of `!!Object.keys().length`, which would eliminate the need for the unary negation operation. However, this might be less readable and more prone to errors.

In summary, the benchmark is comparing two approaches to detect empty objects: Ramda's `isEmpty` function versus a vanilla JavaScript approach using the unary negation operator. The choice between these options depends on your personal preference, the specific use case, and any performance or readability considerations you might have.

Related benchmarks:

R.isEmpty vs !!Object.keys().length (version: 0)

Compare lambda vs vanilla to detect empty object

Comparing performance of: R vs vanilla

Created: 3 years ago by: Guest

Jump to the latest result

R

vanilla

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):