Benchmark: whileVSfindIndex

Script Preparation code:

var tag={}, props={}, children={}, patchFlag=null, dynamicProps={}
var args = [tag, props, children, patchFlag, dynamicProps]

Tests:

while
let i = args.length while (i--) { if (args[i] != null) break }
findIndex
let i = args.findIndex(d=>d==null)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
while
findIndex

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.114 Safari/537.36

Browser/OS: Chrome 89 on Windows

View result in a separate tab

Test name	Executions per second
while	3744834.2 Ops/sec
findIndex	7549876.0 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated 2 months ago):

LLMs can make mistakes. Check important info.

Let's break down the provided JSON and benchmark results to understand what's being tested.

**Benchmark Definition**

The provided JSON defines two benchmark tests: `whileVSfindIndex`. The `Script Preparation Code` and `Html Preparation Code` are empty, indicating that the benchmarks don't require any setup or rendering of HTML content before running. The `Benchmark Definition` specifies a JavaScript function that will be executed for each test.

**Test Cases**

There are two test cases:

1. **`while`**: This benchmark defines a simple `while` loop that iterates over an array, checking if each element is not null.
```javascript
let i = args.length;
while (i--) {
  if (args[i] != null) break;
}
```
2. **`findIndex`**: This benchmark uses the `findIndex()` method to find the index of the first null value in the array.
```javascript
let i = args.findIndex(d => d == null);
```
**Options Compared**

The two benchmarks are compared across different browsers and devices, but not necessarily with different JavaScript engines or optimizations. The main difference lies in how they approach finding the null value:

* `while`: The loop iterates over the array manually using an index, checking each element for null.
* `findIndex`: This method uses a more efficient algorithm to find the first null value, as it only checks up to the point where the predicate (in this case, a simple equality check) returns true.

**Pros and Cons**

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

* **`while`**:
	+ Pros: Simple, easy to understand, and doesn't rely on any additional library functions.
	+ Cons: May be slower due to manual iteration and indexing.
* **`findIndex`**:
	+ Pros: More efficient, as it uses a built-in algorithm that can stop searching once the condition is met.
	+ Cons: May be less intuitive for those unfamiliar with the method.

**Library and Special JS Feature**

Neither of these benchmarks requires any external libraries or special JavaScript features. The `findIndex()` method is a standard part of the ECMAScript language specification, so it's available in most browsers without additional setup.

**Other Alternatives**

If you wanted to benchmark this scenario, other alternatives could include:

* Using a testing framework like Jest or Mocha, which provides built-in support for iterating over arrays and checking for null values.
* Creating a custom iterator function using the `Symbol.iterator` method or a library like Lodash.
* Compiling a version of the code that uses a different optimization technique, such as memoization or caching.

Keep in mind that these alternatives might not be necessary for this specific benchmark, but they could provide an interesting comparison if you're looking to explore other approaches.

Related benchmarks:

whileVSfindIndex (version: 1)

Comparing performance of: while vs findIndex

Created: 3 years ago by: Registered User

Jump to the latest result

while

findIndex

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 2 months ago):