Benchmark: Function call vs Object

Script Preparation code:

var myObject = {
    "/path1/pathA": "firstOne",
    "/path2/pathB": "secondOne",
    "/path3/pathC": "thirdOne"
}

var getMyObject = (path) => {
    if (path.includes("/path1/pathA")) {
        return "firstOne"
    } else if (path.includes("/path2/pathB")) {
        return "secondOne"
    } else if (path.includes("/path3/pathC")) {
        return "thirdOne"
    }
}

Tests:

object with regexp and replace
const path = "/path1/pathA/pathX" const updated = path.replace(/pathX/i, '') const res = myObject[updated]; const path2 = "/path2/pathB/pathY" const updated2 = path2.replace(/pathY/i, '') const res2 = myObject[updated2]; const path3 = "/path3/pathC/pathZ" const updated3 = path3.replace(/pathZ/i, '') const res3 = myObject[updated3];
function call
const path = "/path1/pathA/pathX" const res = getMyObject(path); const path2 = "/path2/pathB/pathY" const res2 = getMyObject(path); const path3 = "/path3/pathC/pathZ" const res3 = getMyObject(path);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
object with regexp and replace
function call

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Android 13; Mobile; rv:133.0) Gecko/133.0 Firefox/133.0

Browser/OS: Firefox Mobile 133 on Android

View result in a separate tab

function call

439.2M/s

object with regexp and replace

2.3M/s

View exact numbers

Test name	Executions per second
✓ function call	439,169,184 Ops/sec
object with regexp and replace	2,273,216 Ops/sec

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

**Benchmark Definition:**

The benchmark measures the performance of two approaches:

1. **Function call:** The `getMyObject` function is called with different paths as arguments, which returns a value based on a predefined condition.
2. **Object lookup with regular expression and replacement:** An object (`myObject`) is used to store values associated with specific paths. These paths are modified using regular expressions and replaced with an empty string, then looked up in the `myObject` object.

**Pros and Cons:**

1. **Function call:**
	* Pros:
		+ Easier to understand and maintain.
		+ Can be optimized for performance through caching or memoization.
	* Cons:
		+ May incur overhead due to function calls and returns.
2. **Object lookup with regular expression and replacement:**
	* Pros:
		+ Can take advantage of the object's data structure and caching.
	* Cons:
		+ May be slower due to regular expression parsing and string manipulation.

**Library/Function used:**

The `getMyObject` function uses a JavaScript regular expression (`i` flag) for pattern matching. The `replace()` method is also used with the `i` flag to replace parts of the path.

**Special JS Feature/Syntax:**

* None mentioned in the provided benchmark definition.

**Alternative Approaches:**

Other approaches that could be considered:

1. **Array lookup:** Instead of using an object, an array could be used to store values associated with specific indices.
2. **Caching:** Both approaches could benefit from caching to improve performance by reducing the number of times the function or object lookup is performed.
3. **Memoization:** The `getMyObject` function could be optimized using memoization techniques to cache and reuse previously computed results.

The benchmark result shows that the Firefox 115 browser performs better for the **function call** approach (ExecutionsPerSecond: 10578787.0) compared to the **object with regexp and replace** approach (ExecutionsPerSecond: 3183395.5). This suggests that the function call approach is likely more efficient in this specific implementation.

Function call vs Object (version: 0) Benchmark.js

Compare Function calls vs Object

Comparing performance of: `object with regexp and replace vs function call`

Created: 2 years ago by: Guest

Go to the latest result

object with regexp and replace

function call

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

Function call vs Object (version: 0) Benchmark.js

Compare Function calls vs Object

Comparing performance of: object with regexp and replace vs function call

Created: 2 years ago by: Guest

Go to the latest result

object with regexp and replace

function call

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

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Comparing performance of: `object with regexp and replace vs function call`