Benchmark: ~~ vs || - MeasureThat.net

Script Preparation code:

var a = 0;
var c = undefined;

Tests:

|| operator
(c || 0) === 0
~~ operator
~~c === 0

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
\|\| operator
~~ operator

Fastest: N/A

Slowest: N/A

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/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36

Browser/OS: Chrome 114 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
\|\| operator	30396902.0 Ops/sec
~~ operator	30612632.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down what's being tested in this benchmark.

**Benchmark Definition**

The benchmark measures the performance of two JavaScript operators: `~~` (bitwise NOT) and `||` (logical OR). Both operators are used to convert the value of `c` (which is initially set to `undefined`) to 0.

**Options Compared**

There are two options being compared:

1. **`~~ operator`**: The bitwise NOT operator (`~~`) is used to test if the result of converting `c` to a number is equal to 0.
2. **`|| operator`**: The logical OR operator (`||`) is used to test if the result of the expression on the right-hand side is true when `c` is `undefined`.

**Pros and Cons**

**`~~ operator`**

Pros:

* Can be faster since it's a bitwise operation, which can be optimized by the compiler.
* Is more explicit about the intention of converting `c` to 0.

Cons:

* May not work correctly for all types of values (e.g., non-numeric values).
* Some older browsers may not support this operator.

**`|| operator`**

Pros:

* Works with most types of values, including non-numeric ones.
* Is widely supported by modern browsers.

Cons:

* Can be slower since it's a logical operation, which may require more computations.
* May not be as explicit about the intention of converting `c` to 0.

**Library Usage**

In this benchmark, there is no specific library being used. However, if you were to use a library like Lodash or Underscore.js, you might see something like this:

```javascript
const _ = require('lodash');

// Using _.isNil() instead of || operator
_.isNil(c) === 0;

// Or using _.identity() and conditional statements
if (c !== undefined) {
    const result = 1;
} else {
    const result = 0;
}
```

**Special JS Feature or Syntax**

In this benchmark, there is no special JavaScript feature or syntax being tested. The focus is on the performance of two simple operators.

However, if you were to modify the benchmark to test other features like async/await, generators, or ES6 classes, that would be a different story.

**Other Alternatives**

If you wanted to compare the performance of `~~` and `||` operators in a different context, here are some alternative approaches:

* Use `===` (strict equality) instead of `==` (loose equality).
* Compare the performance of using `isNaN()` or `isFinite()` to check if a value is 0.
* Test the performance of various numeric operations like `+`, `-`, `*`, `/`, etc.

Keep in mind that these alternatives might not be directly related to the original benchmark, but they could provide interesting insights into JavaScript's performance and behavior.

Related benchmarks:

~~ vs || (version: 0)

~~ vs || in javascript performance to convert to 0

Comparing performance of: || operator vs ~~ operator

Created: one year ago by: Guest

Jump to the latest result

|| operator

~~ operator

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):