Benchmark: adfsewfwe - MeasureThat.net

Tests:

1
function findSingle(arr) { let singleOccurence = null; arr.forEach((item) => { let count = arr.filter(i => i === item).length; if (count === 1) { singleOccurence = item; } }); return singleOccurence; } const arr = [10, 2, 2 , 1, 0, 0, 10]; findSingle(arr);
2
function findSingle(arr) { return arr.reduce((r, a) => r ^ a); } const arr = [10, 2, 2 , 1, 0, 0, 10]; findSingle(arr);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
1
2

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):

LLMs can make mistakes. Check important info.

I'll break down the benchmark and explain what's being tested, compared options, pros and cons, and other considerations.

**Benchmark Overview**

MeasureThat.net is a website that allows users to create and run JavaScript microbenchmarks. The provided JSON represents two individual test cases: `findSingle` (Test Name: "1") and another function (Test Name: "2"). We'll focus on the first one.

**What's being tested?**

The first benchmark measures the performance of a JavaScript function that finds a single occurrence in an array. The function is defined as follows:
```javascript
function findSingle(arr) {
  let singleOccurence = null;
  arr.forEach((item) => {
    let count = arr.filter(i => i === item).length;
    if (count === 1) {
      singleOccurence = item;
    }
  });
  return singleOccurence;
}
```
This function uses a simple iterative approach to find the single occurrence in the array.

**Comparison of options**

There are two benchmarked functions:

**Option 1: `findSingle` using iteration**
```javascript
function findSingle(arr) {
  let singleOccurence = null;
  arr.forEach((item) => {
    let count = arr.filter(i => i === item).length;
    if (count === 1) {
      singleOccurrence = item; // corrected typo
    }
  });
  return singleOccurence;
}
```
**Option 2: `findSingle` using `reduce()`**
```javascript
function findSingle(arr) {
  return arr.reduce((r, a) => r ^ a);
}
```
**Pros and cons**

* **Iteration (Option 1)**:
	+ Pros: Easy to understand, doesn't require knowledge of `reduce()`.
	+ Cons: Iterative approach can be slow for large arrays.
* **`reduce()` (Option 2)**:
	+ Pros: More concise, potentially faster due to optimized implementation.
	+ Cons: Requires knowledge of `reduce()` syntax.

**Other considerations**

* The benchmark measures the performance of each function using a specific array `[10, 2, 2, 1, 0, 0, 10]`. This is a small array with multiple occurrences, which might not be representative of real-world scenarios.
* The `findSingle` function uses a variable `singleOccurence` (note the corrected typo) to store the result. It's unclear if this variable is used elsewhere in the codebase or if it's just for benchmarking purposes.

**Library and dependencies**

Neither of the benchmarked functions appears to use any external libraries or dependencies, apart from built-in JavaScript features like `Array.prototype.forEach()` and `Array.prototype.reduce()`.

**Special JS feature/syntax**

There are no special JavaScript features or syntax used in these benchmarks. However, it's worth noting that `reduce()` is a modern JavaScript feature introduced in ECMAScript 2015 (ES6).

**Alternatives**

Other approaches to find a single occurrence in an array might include:

* Using `indexOf()` and checking for -1
* Using `some()` and `filter()`
* Using a regular expression with `exec()` and capturing groups

However, these alternatives are not benchmarked on MeasureThat.net.

I hope this explanation helps you understand the benchmark!

Related benchmarks:

adfsewfwe (version: 0)

Comparing performance of: 1 vs 2

Created: 4 years ago by: Guest

Jump to the latest result

1

2

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):