Benchmark: Boolean vs !! - variable2

Script Preparation code:

var newVar = null;

Tests:

Test1
!!newVar
Test2
Boolean(newVar)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Test1
Test2

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

Let's dive into the explanation of the provided benchmark.

**What is being tested?**

The benchmark tests the performance difference between two approaches to convert a variable to a boolean value:

1. `!!newVar` (double not operator)
2. `Boolean(newVar)`

In JavaScript, `!!` is an overloaded operator that converts its operand to a boolean value. The first `!` negates the value, and the second `!` performs a loose truthy-value-to-boolean conversion.

**Options being compared**

The benchmark compares the execution speed of these two approaches:

* `!!newVar`: This approach uses the double not operator, which is likely to be faster due to its optimized implementation.
* `Boolean(newVar)`: This approach explicitly converts the variable to a boolean value using the `Boolean()` function.

**Pros and Cons**

1. `!!newVar`:
	* Pros: Likely to be faster due to its optimized implementation and reduced overhead.
	* Cons: May not be as explicit or readable, especially for developers who are not familiar with the double not operator.
2. `Boolean(newVar)`.
	* Pros: More explicit and readable, making it easier to understand the intention of the code.
	* Cons: May have slower execution speed due to the additional function call and conversion.

**Other considerations**

The benchmark may also take into account other factors that can affect performance, such as:

* Variable type (e.g., boolean, number, string)
* Variable value
* Browser and JavaScript engine versions

**Library usage**

There is no explicit library mentioned in the benchmark definition or test cases. However, it's likely that the benchmark uses a library like V8 (Chrome's JavaScript engine) or SpiderMonkey (Firefox's JavaScript engine) to execute the tests.

**Special JS features/syntax**

None are explicitly mentioned in the provided information.

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/112.0.0.0 Safari/537.36

Browser/OS: Chrome 112 on Windows

View result in a separate tab

Test name	Executions per second
Test1	17023830.0 Ops/sec
Test2	6231628.5 Ops/sec

Related benchmarks:

Boolean vs !! - variable2 (version: 0)

Comparing performance of: Test1 vs Test2

Created: one year ago by: Guest

Jump to the latest result

Test1

Test2

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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