Benchmark: Boolean constructor vs double negotiation trick in javascript but better

Script Preparation code:

var bFalse = false;
var sEmpty = '';
var sFilled = 'Foo';
var nZero = 0;
var nOne = 1;

Tests:

Boolean
const a = Boolean(bFalse) const b = Boolean(sEmpty) const c = Boolean(sFilled) const d = Boolean(nZero) const e = Boolean(nOne)
Double negation trick
const a = !!bFalse const b = !!sEmpty const c = !!sFilled const d = !!nZero const e = !!nOne

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Boolean
Double negation trick

Fastest: N/A

Slowest: N/A

Latest run results:

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

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I'd be happy to explain the benchmark and its various aspects.

**Benchmark Overview**

The benchmark measures the performance difference between using the `Boolean` constructor and the double negation trick (`!!`) when creating boolean values in JavaScript.

**Script Preparation Code**

The script preparation code sets up variables that will be used in the benchmark:

* `bFalse`: a variable set to `false`
* `sEmpty`: an empty string
* `sFilled`: a non-empty string `'Foo'`
* `nZero`: the number 0
* `nOne`: the number 1

These variables are used to create boolean values using both the `Boolean` constructor and the double negation trick.

**Html Preparation Code**

The html preparation code is empty, which means that the benchmark does not use any HTML-specific features or libraries.

**Options Compared**

There are two options being compared in this benchmark:

1. **Boolean constructor**: The `Boolean` constructor creates a boolean value based on its argument. For example, `Boolean(bFalse)` will return `false`.
2. **Double negation trick**: The double negation trick is a shorthand way of creating a boolean value. It works by applying the unary negative operator (`-`) twice to a value, effectively converting it to a boolean value. In this benchmark, the double negation trick is used as `!!bFalse`, which will return `true`.

**Pros and Cons**

* **Boolean constructor**: Pros:
	+ Clear and explicit syntax
	+ Can be used with other JavaScript functions that expect a boolean argument
* Cons:
	+ May be slower than the double negation trick for certain types of values
* **Double negation trick**: Pros:
	+ Often faster than the `Boolean` constructor due to its ability to short-circuit evaluation
	+ More concise syntax
* Cons:
	+ Less readable and explicit syntax compared to the `Boolean` constructor
	+ May not be compatible with all JavaScript functions or libraries

**Library**

In this benchmark, no external library is used. The only JavaScript feature being tested is the comparison of two different ways of creating boolean values.

**Special JS Feature or Syntax**

There are a few special features and syntax elements being used in this benchmark:

* **Unary negative operator (`-`)**: This operator has a special meaning when applied twice, as seen in `!!bFalse`.
* **Short-circuit evaluation**: The double negation trick takes advantage of short-circuit evaluation to avoid unnecessary computations.

**Other Alternatives**

If the developers want to explore other options or alternatives for creating boolean values, they could consider using:

* **Logical AND (`&&`) and logical OR (`||`) operators**: These operators can be used to create boolean values in a more explicit way.
* **`true` and `false` constants**: Using these built-in constants can provide a clear and concise syntax for creating boolean values.

In conclusion, the benchmark is testing two different ways of creating boolean values in JavaScript: the `Boolean` constructor and the double negation trick. The results will help determine which method is faster and more efficient for certain use cases.

Related benchmarks:

Boolean constructor vs double negotiation trick in javascript but better (version: 0)

Comparing performance of: Boolean vs Double negation trick

Created: 3 years ago by: Guest

Jump to the latest result

Boolean

Double negation trick

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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