Benchmark: Check array deez nuts

Script Preparation code:

var isArray = Array.isArray;
var arr = [];

Tests:

Array.isArray
if (isArray(arr));
Pop
if (arr.pop);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.isArray
Pop

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):

LLMs can make mistakes. Check important info.

I'd be happy to help you understand what's being tested in this JavaScript benchmark.

**What is being tested?**

The provided JSON represents two test cases: `Array.isArray` and `Pop`. The test aims to measure the performance of these operations on an array. Specifically, it checks if the `Array.isArray` function returns a boolean value for an empty array (`var arr = [];`) and if the `pop()` method can be called without throwing an error on that same array.

**Options compared:**

Two options are being compared:

1. **`Array.isArray`**: This is a built-in JavaScript function that checks if an object is an array.
2. **`Pop`**: This is the result of calling the `pop()` method on an empty array (`var arr = [];`). The performance test measures how many times this operation can be executed per second.

**Pros and cons of each approach:**

* **`Array.isArray`**:
	+ Pros: Fast, lightweight, and widely supported.
	+ Cons: May not provide meaningful results for non-array objects, as it returns `true` for non-array values (e.g., numbers, strings).
* **`Pop`**:
	+ Pros: Relevant to array operations and can provide insights into the performance of array manipulation.
	+ Cons: This operation is relatively expensive due to the overhead of checking if an element exists on a given index.

**Library usage:**

None of the test cases explicitly use a library. The `Array.isArray` function is a built-in JavaScript method, while the `pop()` method is part of the Array prototype.

**Special JS feature or syntax:**

There are no special features or syntax mentioned in this benchmark. It only involves basic JavaScript operations and built-in functions.

**Other alternatives:**

To measure array manipulation performance, other alternatives could include:

1. Creating a large array and repeatedly calling `push()` or `unshift()`.
2. Using `slice()` to create multiple copies of an array and measuring the overhead.
3. Implementing a simple dynamic array using JavaScript objects or Maps.

Keep in mind that these alternatives would require significant modifications to the benchmark code, as they might not accurately represent real-world scenarios.

In summary, this benchmark tests the performance of two basic operations: checking if an object is an array (`Array.isArray`) and popping elements from an empty array (`pop()`). The results provide insights into the speed of these operations across different browsers and devices.

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.1 Safari/605.1.15

Browser/OS: Safari 16 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Array.isArray	5336629.5 Ops/sec
Pop	10537722.0 Ops/sec

Related benchmarks:

Check array deez nuts (version: 0)

Comparing performance of: Array.isArray vs Pop

Created: one year ago by: Registered User

Jump to the latest result

Array.isArray

Pop

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):