Benchmark: Object Signatures

Script Preparation code:

var shapes = [];

for ( let i = 0; i < 100; i++ ) {
  shapes.push( {
      position: { x: Math.random(), y: Math.random() },
      width: Math.random(),
      height: Math.random(),
      points: [
          { x: Math.random(), y: Math.random() },
          { x: Math.random(), y: Math.random() },
          { x: Math.random(), y: Math.random() },
          { x: Math.random(), y: Math.random() },
      ]
  } );
}

function sortObjectProperties( objKey, val ) {
	var normalized, keys, i, len;
	if ( !Array.isArray( val ) && Object( val ) === val ) {
		normalized = {};
		keys = Object.keys( val ).sort();
		i = 0;
		len = keys.length;
		for ( ; i < len; i += 1 ) {
			normalized[keys[i]] = val[keys[i]];
		}
		return normalized;
	} else {
		return val;
	}
}

function recursiveSortedSignature( o ) {
  const keys = Object.keys( o ).sort();
  let sig = '';
  for ( let k of keys ) {
      let v = o[k];
      if ( Object( v ) === v ) {
          v = recursiveSortedSignature( v );
      }
      sig += `(${k}:${v})`;
  }
  return sig;
}

function customSignature( o ) {
  const { position: { x, y }, width, height, points } = o;
  let pts = '';
  for ( let point of points ) {
      pts += `(${point.x}x${point.y})`;
  }
  return `@(${x},${y})#(${width},${height})*${pts}`;
}

Tests:

JSON.stringify
for ( let shape of shapes ) { JSON.stringify( val, sortObjectProperties ); }
Generic signature builder
for ( let shape of shapes ) { recursiveSortedSignature( shape ); }
Custom signature builder
for ( let shape of shapes ) { customSignature( shape ); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
JSON.stringify
Generic signature builder
Custom signature builder

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):

LLMs can make mistakes. Check important info.

**Overview**

The provided JSON represents a benchmarking test case for JavaScript microbenchmarks on the MeasureThat.net website. The test measures the performance of three different approaches to generate signatures for objects: `JSON.stringify`, `recursiveSortedSignature`, and `customSignature`. We'll break down each approach, its pros and cons, and discuss any notable libraries or special features used in these tests.

**Test Cases**

1. **JSON.stringify**
	* Benchmark Definition: `for ( let shape of shapes ) {\r\n    JSON.stringify( val, sortObjectProperties );\r\n}`
	* Test Name: "JSON.stringify"
	* Description: This test uses the built-in `JSON.stringify()` function to generate a signature for each object. The `sortObjectProperties` function is used to normalize the object properties before stringification.
	* Pros:
		+ Simple and concise implementation
		+ Wide support across browsers
	* Cons:
		+ Can be slow due to the overhead of stringifying objects
		+ May not be suitable for all use cases (e.g., large objects)
2. **Generic signature builder**
	* Benchmark Definition: `for ( let shape of shapes ) {\r\n    recursiveSortedSignature( shape );\r\n}`
	* Test Name: "Generic signature builder"
	* Description: This test uses a custom function `recursiveSortedSignature` to generate a signature for each object. The function recursively sorts the object properties and concatenates them into a string.
	* Pros:
		+ Flexible and customizable implementation
		+ Can handle complex objects with nested properties
	* Cons:
		+ More complex and computationally expensive than `JSON.stringify`
		+ May not be suitable for very large objects or performance-critical applications
3. **Custom signature builder**
	* Benchmark Definition: `for ( let shape of shapes ) {\r\n    customSignature( shape );\r\n}`
	* Test Name: "Custom signature builder"
	* Description: This test uses a custom function `customSignature` to generate a signature for each object. The function extracts specific properties from the object and formats them into a string.
	* Pros:
		+ Highly optimized and performance-focused implementation
		+ Customizable to suit specific use cases or requirements
	* Cons:
		+ More complex and harder to understand than `JSON.stringify`
		+ May not be suitable for all types of objects or use cases

**Libraries and Special Features**

* `Object.keys()`, `Array.isArray()`, `Object( ) === val`: These are built-in JavaScript functions that are used extensively in the tests. They provide a way to iterate over object properties, check if an object is an array, and compare an object with its value using the strict equality operator (`===`).
* `sort()` method: This is used in all three test cases to sort the object properties.
* `JSON.stringify()`: This built-in function is used to generate a string representation of an object.

**Alternatives**

If you need to create signatures for objects, you may want to consider the following alternatives:

* Using a library like Lodash or Ramda, which provide a range of functions for working with objects and arrays.
* Implementing your own signature generation function using JavaScript's built-in functions and data structures.
* Considering alternative serialization formats like JSON atob (base64 encoded) string or even a proprietary binary format.

**Best Practices**

When creating signatures for objects, consider the following best practices:

* Use concise and readable code
* Optimize performance by minimizing unnecessary computations
* Handle edge cases and error conditions gracefully
* Test your implementation thoroughly to ensure correctness and consistency

Latest run results:

Run details: (Test run date: 7 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36

Browser/OS: Chrome 56 on Mac OS X 10.12.3

View result in a separate tab

Test name	Executions per second
JSON.stringify	0.0 Ops/sec
Generic signature builder	693.2 Ops/sec
Custom signature builder	12033.6 Ops/sec

Related benchmarks:

Object Signatures (version: 0)

Unique string for object by value

Comparing performance of: JSON.stringify vs Generic signature builder vs Custom signature builder

Created: 7 years ago by: Guest

Jump to the latest result

JSON.stringify

Generic signature builder

Custom signature builder

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):