Benchmark: Includes vs Direct access 4

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)
Direct
values2[5]

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:

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

LLMs can make mistakes. Check important info.

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

**Benchmark Overview**

The benchmark, titled "Includes vs Direct access 4", compares two approaches to accessing an array: using the `includes()` method and direct array indexing (`values2[5]`). The script preparation code creates two arrays, `values1` and `values2`, each with 500 elements. The benchmark aims to measure the performance difference between these two methods.

**Options Compared**

The options being compared are:

1. **Includes()**: Uses the `includes()` method to check if a value exists in the array.
2. **Direct Access (`values2[5]`)**: Directly accesses an element at index 5 of the array `values2`.

**Pros and Cons**

*   **Includes():**
    *   Pros:
        *   More readable and maintainable code, especially when working with larger arrays or complex data structures.
        *   Handles edge cases (e.g., null or undefined values) in a more robust way than direct indexing.
    *   Cons:
        *   May have performance overhead due to the method call and potential use of internal algorithms.
*   **Direct Access (`values2[5]`):**
    *   Pros:
        *   Typically faster than `includes()` since it avoids method call overhead and directly accesses memory locations.
        *   Can be more efficient for small arrays or arrays with a limited number of elements.
    *   Cons:
        *   Less readable and maintainable code, especially when working with larger arrays or complex data structures.
        *   Fails if the array index is out of bounds (e.g., accessing `values2[500]` when `values2` only has 500 elements).

**Library**

The benchmark uses a JavaScript library called `includes()` which is built into modern JavaScript engines. The `includes()` method is designed to efficiently determine whether an element with the specified value exists in the array.

**Special JS Features or Syntax**

The benchmark does not use any special JavaScript features or syntax beyond standard ECMAScript 2022.

**Alternatives**

For similar benchmarks, consider the following alternatives:

1.  **Other methods for accessing arrays:** The benchmark could compare other methods, such as `find()`, `indexOf()`, or direct indexing with a `for` loop.
2.  **Array operations:** Consider adding more array operations to the benchmark, like sorting, reversing, or concatenating, to provide a broader comparison.
3.  **Different data structures:** The benchmark could compare different data structures, such as linked lists, sets, or objects, to assess their performance in various scenarios.

Keep these alternatives in mind when creating future benchmarks, and consider using the test results to inform your development decisions and optimize code for better performance.

Related benchmarks:

Includes vs Direct access 4 (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):