Benchmark: reduce vs sort - MeasureThat.net

Script Preparation code:

const applications = [{
    createdDate: 1
}, {
    createdDate: 3
}, {
    createdDate: 2
}];

Tests:

with reduce
const applications = [{ createdDate: 1 }, { createdDate: 3 }, { createdDate: 2 }]; return applications.reduce((prev, curr) => (prev.createdDate > curr.createdDate ? prev : curr));
with sort
const applications = [{ createdDate: 1 }, { createdDate: 3 }, { createdDate: 2 }]; return applications.sort((prev, curr) => (prev.createdDate > curr.createdDate))[0];

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
with reduce
with sort

Fastest: N/A

Slowest: N/A

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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 benchmark and explain what's being tested.

**Benchmark Definition**

The benchmark is designed to compare two approaches: using `reduce()` and using `sort()`. The input data consists of an array of objects, each containing a `createdDate` property.

**Options Compared**

Two options are being compared:

1. **Reduce**: The `reduce()` method applies a callback function to each element in the array, accumulating a result. In this case, the callback function compares the `createdDate` properties and returns the object with the earliest date.
2. **Sort**: The `sort()` method sorts the array of objects based on the `createdDate` property and returns the sorted array.

**Pros and Cons**

Here's a brief summary of the pros and cons of each approach:

* **Reduce**:
	+ Pros:
		- More concise and expressive code
		- Can be more efficient for smaller datasets
	+ Cons:
		- Can be less intuitive for some developers
		- May not work as expected if the data is not in a specific order
* **Sort**:
	+ Pros:
		- Widely supported and well-understood algorithm
		- Can handle larger datasets more efficiently than `reduce()`
	+ Cons:
		- Requires sorting the entire array, which can be slower for smaller datasets
		- May require additional processing to extract the desired result

**Library**

Neither of these methods relies on any external libraries. However, it's worth noting that `sort()` may use a custom comparison function provided by the developer.

**Special JS Features/Syntax**

There are no special JavaScript features or syntax used in this benchmark. The code is straightforward and follows standard JavaScript conventions.

**Other Alternatives**

If you were to choose an alternative approach, you might consider using:

* **Array.prototype.every()**: This method returns a boolean indicating whether every element in the array satisfies the provided condition.
* **Array.prototype.findIndex() + Array.prototype.slice()**: This combination can be used to find the index of the earliest date and then extract the corresponding object from the original array.

However, these alternatives might not provide the same level of readability or performance as using `reduce()` or `sort()`.

Related benchmarks:

reduce vs sort (version: 0)

Comparing performance of: with reduce vs with sort

Created: 3 years ago by: Guest

Jump to the latest result

with reduce

with sort

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):