Benchmark: includes VS Object

Tests:

includes OK
const arr = [1,2,3,4,5,6,7,8,9,10]; let isFound = arr.includes(8);
includes KO
const arr = [1,2,3,4,5,6,7,8,9,10]; let isFound = arr.includes(12);
object OK
const obj = {1 : true,2 : true,3 : true,4 : true,5 : true,6 : true,7 : true,8 : true,9 : true,10 : true}; let isFound = (obj["8"]);
object KO
const obj = {1 : true,2 : true,3 : true,4 : true,5 : true,6 : true,7 : true,8 : true,9 : true,10 : true}; let isFound = (obj["12"]);
indexOf OK
const arr = [1,2,3,4,5,6,7,8,9,10]; let isFound = (-1 != arr.indexOf(8));
indexof KO
const arr = [1,2,3,4,5,6,7,8,9,10]; let isFound = (-1 != arr.indexOf(12));

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
includes OK
includes KO
object OK
object KO
indexOf OK
indexof KO

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.93 Safari/537.36

Browser/OS: Chrome 90 on Windows

View result in a separate tab

Test name	Executions per second
includes OK	838494912.0 Ops/sec
includes KO	830039040.0 Ops/sec
object OK	82898976.0 Ops/sec
object KO	82533144.0 Ops/sec
indexOf OK	65236624.0 Ops/sec
indexof KO	64758768.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark definition and test cases to understand what is being tested, and explore the pros and cons of different approaches.

**Benchmark Definition**

The provided JSON represents a benchmark with four test cases:

1. `includes OK`: Tests if the `includes` method returns true for a valid index.
2. `includes KO`: Tests if the `includes` method returns false for an invalid index.
3. `object OK`: Tests if accessing an object property using bracket notation (`obj[8]`) returns true.
4. `object KO`: Tests if accessing an object property using bracket notation (`obj[12]`) returns false.
5. `indexOf OK`: Tests if the `indexOf` method returns a non-negative index for a valid element.
6. `indexOf KO`: Tests if the `indexOf` method returns -1 for an invalid element.

**Options Compared**

The benchmark compares different approaches to achieve these test cases:

* `includes` vs. bracket notation (`obj[8]`)
* `includes` vs. using equality operator (`===`) with `indexOf`
* Bracket notation (`obj[8]`) vs. property access using dot notation (`obj.8`)

**Pros and Cons**

1. **`includes` method**: Pros:
	* Simple to implement
	* Fast lookup (O(n) in the worst case)
	* Returns true if the element is found, false otherwise
Cons:
	* Can be slower than other approaches for very large arrays
2. **Bracket notation (`obj[8]`)**: Pros:
	* Direct and efficient access to object properties
	* Can be faster than `includes` method for large objects
Cons:
	* Requires knowledge of object property syntax (e.g., `obj["8"]`)
3. **Equality operator (`===`) with `indexOf`**: Pros:
	* Provides a direct comparison between the value and the search value
	* Can be faster than using `includes`
Cons:
	* Returns -1 if the element is not found, which might not be what's expected

**Library Usage**

None of the test cases use any external libraries. The benchmark only relies on standard JavaScript features.

**Special JS Features or Syntax**

The following special JS features are used:

1. Bracket notation (`obj[8]`)
2. Property access using dot notation is not explicitly tested, but it's worth noting that it's another way to access object properties.
3. Equality operator (`===`) with `indexOf` uses a special syntax for the comparison.

**Alternatives**

If you wanted to write these benchmarks in a different language or framework, here are some alternatives:

* Python: Use built-in data structures and methods (e.g., `list.includes()`, `dict[key]`)
* Java: Use `List.indexOf()` or `Map.get()` methods
* C++: Use iterators or containers like `std::vector`
* Framework-specific benchmarks:
	+ React: Use JSX and virtual DOM APIs to benchmark component rendering.
	+ Angular: Use template literals and component lifecycle hooks to benchmark application performance.

Note that these alternatives would require significant changes in approach, as the JavaScript ecosystem is designed for rapid prototyping and iteration.

Related benchmarks:

includes VS Object (version: 0)

Comparing performance of: includes OK vs includes KO vs object OK vs object KO vs indexOf OK vs indexof KO

Created: 3 years ago by: Guest

Jump to the latest result

includes OK

includes KO

object OK

object KO

indexOf OK

indexof KO

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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