Benchmark: Includes vs Direct access 3

Script Preparation code:

values1 = [];
for(i=0; i<500; i++){
  values1.push(i);
}

values2 = {};
for(i=0; i<500; i++){
  values2[i] = true;
}

Tests:

Includes
values1.includes(5) values1.includes(480) values1.includes(200) values1.includes(330) values1.includes(600)
Direct
values2[5] values2[480] values2[200] values2[330] values2[600]

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Includes
Direct

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 dive into the world of JavaScript microbenchmarks on MeasureThat.net.

**Benchmark Definition**

The provided JSON represents a benchmark definition, which is a set of instructions that defines how to prepare and run a benchmark. In this case, the benchmark compares two approaches: using `includes()` and direct access (using square bracket notation) to search for a specific value in an array.

**Script Preparation Code**

The script preparation code is responsible for initializing the test data. It creates two arrays:

1. `values1`: An empty array that is populated with 500 values using a `for` loop.
2. `values2`: An empty object that is populated with 500 key-value pairs using another `for` loop.

**Html Preparation Code**

There is no HTML preparation code provided, which means that the benchmark does not use any specific HTML structure or elements.

**Individual Test Cases**

The benchmark consists of two test cases:

1. **Includes**: This test case uses the `includes()` method to search for the presence of a value in the `values1` array.
2. **Direct**: This test case uses direct access (square bracket notation) to search for the presence of a value in the `values2` object.

**Library and Purpose**

In this benchmark, the `Array.prototype.includes()` method is used. The purpose of this library is to provide an efficient way to check if a specific value exists within an array.

**Special JavaScript Feature/Syntax**

There are no special JavaScript features or syntax used in this benchmark that would require additional explanation.

**Other Considerations**

When comparing these two approaches, consider the following:

* **Performance**: The `includes()` method is generally faster than direct access (square bracket notation) because it uses a more efficient algorithm to search for the value. However, the difference may be negligible for small arrays like this one.
* **Readability**: Direct access (square bracket notation) can make the code more readable and concise, especially when searching for a specific value in an object.

**Alternatives**

If you were to rewrite this benchmark, you could consider alternative approaches:

1. **Binary Search**: Instead of using `includes()` or direct access, you could use binary search algorithms (e.g., [XOR search](https://en.wikipedia.org/wiki/XOR_search)) for even faster performance.
2. **Hash Tables**: If the size of the array/object is large, you could consider using hash tables (e.g., objects with integer keys) to achieve better performance.
3. **Just-In-Time (JIT) Compilation**: Modern JavaScript engines use JIT compilation to optimize performance-critical code paths like `includes()` and direct access.

Keep in mind that these alternatives might require significant changes to the benchmark code and may not be feasible for small arrays or simple search operations.

Related benchmarks:

Includes vs Direct access 3 (version: 0)

Comparing performance of: Includes vs Direct

Created: 3 years ago by: Guest

Jump to the latest result

Includes

Direct

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):