Benchmark: Length not 0 - MeasureThat.net

Script Preparation code:

var arr = [];

Tests:

!== 0
if (arr.length !== 0) { console.log(1); } else { console.log(0); }
> 0
if (arr.length > 0) { console.log(1); } else { console.log(0); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
!== 0
> 0

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36

Browser/OS: Chrome 123 on Windows

View result in a separate tab

Test name	Executions per second
!== 0	322614.8 Ops/sec
> 0	325514.2 Ops/sec

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

LLMs can make mistakes. Check important info.

I'll break down the provided benchmark and its testing.

**Benchmark Definition JSON**

The provided `Benchmark Definition` JSON represents a JavaScript microbenchmark that checks for the condition of an array length not being zero (`Length not 0`). This is done by checking two different conditions:

1. `!== 0`: This uses the non-strict equality operator (`!==`) to check if the length of the `arr` array is not equal to 0.
2. `> 0`: This uses a strict greater-than operator (`>` ) to check if the length of the `arr` array is strictly greater than 0.

**Options Compared**

The benchmark compares two different approaches:

1. **Non-strict equality operator (`!==`)**: This checks if the value of `arr.length` is not equal to 0.
2. **Strict greater-than operator (`>` )**: This checks if the value of `arr.length` is strictly greater than 0.

**Pros and Cons**

* **Non-strict equality operator (`!==`)**:
	+ Pros: More flexible, can handle cases where 0 might be a valid value (e.g., an array with only zeros).
	+ Cons: Can lead to false positives if the value being compared is not exactly equal to zero.
* **Strict greater-than operator (`>` )**:
	+ Pros: Provides a strict definition of "greater than", reducing the chance of false positives.
	+ Cons: May exclude cases where 0 is a valid value.

**Library and Special Features**

The provided benchmark does not use any external libraries. It only relies on built-in JavaScript features, such as arrays and the `console.log` function.

There are no special JS features or syntax mentioned in this benchmark that would require advanced knowledge of JavaScript.

**Other Alternatives**

If you were to run a similar benchmark, some alternative approaches could be:

1. Using `strictEqual` (a part of Jest) instead of `!==`
2. Using `gt` and `lt` functions from Lodash library
3. Using TypeScript type annotations for array lengths

These alternatives might provide different results or performance profiles compared to the original benchmark.

**Benchmark Preparation Code**

The provided `Script Preparation Code` initializes an empty array in a JavaScript variable, which is used as input for both test cases:

```javascript
var arr = [];
```

This code does not perform any additional setup that would affect the benchmark's outcome.

Related benchmarks:

Length not 0 (version: 0)

Comparing performance of: !== 0 vs > 0

Created: one year ago by: Guest

Jump to the latest result

!== 0

> 0

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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