Benchmark: BooleanVsLogicalOperatior

Script Preparation code:

const items = [{
    a: 1
}];
const emptyItems = [];

Tests:

boolean empty
const items = [{ a: 1 }]; const emptyItems = []; Boolean(emptyItems.length);
boolean with items
const items = [{ a: 1 }]; const emptyItems = []; Boolean(items.length);
logical empty
const items = [{ a: 1 }]; const emptyItems = []; emptyItems.length > 0;
logical with items
const items = [{ a: 1 }]; const emptyItems = []; items.length > 0;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
boolean empty
boolean with items
logical empty
logical with items

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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

LLMs can make mistakes. Check important info.

Let's break down the provided JSON and explain what's being tested, the different approaches compared, their pros and cons, and other considerations.

**Benchmark Definition**

The benchmark definition defines a test scenario where users can compare the performance of `Boolean` (a JavaScript built-in function) vs logical operators (`===`, `!==`, etc.) for two types of input:

1. Empty arrays (`emptyItems`)
2. Non-empty arrays with a single item (`items`)

**Test Cases**

The benchmark consists of four individual test cases, each with its own script preparation code and HTML preparation code (which is empty in this case). The test cases are:

1. `boolean empty`: Tests the `Boolean` function on an empty array.
2. `boolean with items`: Tests the `Boolean` function on a non-empty array with a single item.
3. `logical empty`: Tests the logical operator `>` on an empty array (e.g., `emptyItems.length > 0`).
4. `logical with items`: Tests the logical operator `>` on a non-empty array with a single item (e.g., `items.length > 0`).

**Library Used**

There is no specific library mentioned in the benchmark definition or test cases.

**Special JS Feature/Syntax**

The benchmark uses JavaScript's built-in `Boolean` function, which returns `true` if the input is truthy and `false` otherwise. It also uses the logical operator `>` to compare array lengths.

**Approaches Compared**

There are two approaches compared:

1. **Using `Boolean`**: The `Boolean` function checks if an object is truthy (i.e., not null, undefined, 0, or an empty string). In this benchmark, it's used to check the length of arrays.
2. **Using logical operators (`===`, `!==`, etc.)**: Logical operators are used to directly compare values, including array lengths.

**Pros and Cons**

* **Using `Boolean`**:
	+ Pros: Can be concise and expressive for simple checks.
	+ Cons: May lead to performance issues if the function is not optimized or if there are many such checks in the codebase.
* **Using logical operators (`===`, `!==`, etc.)**:
	+ Pros: More explicit, can be easier to read, and may perform better than relying on `Boolean`.
	+ Cons: May require more boilerplate code for simple checks.

**Other Considerations**

* The benchmark only tests two specific scenarios, which might not cover the full range of possible use cases.
* The test results are likely skewed by the small array size used in these examples.
* Other factors, such as browser-specific optimizations or caching, may affect performance and should be taken into account when interpreting the results.

**Alternatives**

Other alternatives to compare for this benchmark could include:

* Using `Number` instead of `Boolean`
* Using arrow functions or modern JavaScript features like `?.?.` (optional chaining)
* Using a more specialized library or function for checking array lengths

Keep in mind that these alternatives would likely change the test cases and results, so it's essential to re-run the benchmark with new approaches to ensure accurate comparisons.

Related benchmarks:

BooleanVsLogicalOperatior (version: 0)

Boolean vs logical operatior

Comparing performance of: boolean empty vs boolean with items vs logical empty vs logical with items

Created: 4 years ago by: Guest

Jump to the latest result

boolean empty

boolean with items

logical empty

logical with items

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):