Benchmark: getter tree vs single method

Script Preparation code:

function Method(change) { this.change = change; }

Method.prototype = {
    constructor: method,
    getVars: function() {
        if (this.change >= 0) {
        	return {
                color: 'green',
                icon: 'up'
            };
        } else {
        	return {
              color: 'red',
              icon: 'down'
            };
        }
    },
};

function Getters(change) { this.change = change; }

Getters.prototype = {
    constructor: getters,
    
	get positive() {
  		return this.change >= 0;
	},
      
    get icon() {
		return this.positive ? 'up': 'down';
    },
          
    get color() {
		return this.positive ? 'green': 'red';
    },
}

var method = new Method(1);
var getters = new Getters(1);

Tests:

getter tree
var icon = getters.icon; var color = getters.color;
single method
var allVars = method.getVars(); var icon = allVars.icon; var color = allVars.color;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
getter tree
single method

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what is tested, the pros and cons of different approaches, and other considerations.

**Benchmark Definition**

The benchmark consists of two test cases:

1. **Getter Tree**: This approach uses a getter tree to access variables from an object. In JavaScript, getters are functions that provide read-only access to properties of an object.
2. **Single Method**: This approach calls a single method `getVars` on an object to retrieve the values of multiple variables.

**Script Preparation Code**

The script preparation code defines two classes: `Method` and `Getters`. Both classes have a constructor and several getter methods that return different values based on the instance's `change` property.

**Options Compared**

The benchmark compares the performance of two approaches:

* **Getter Tree**: This approach uses getters to access variables from an object. It has two nested getters: `get positive`, `get icon`, and `get color`.
* **Single Method**: This approach calls a single method `getVars` on an object to retrieve the values of multiple variables.

**Pros and Cons**

* **Getter Tree**:
	+ Pros:
		- Easier to read and understand, as each getter is a separate function.
		- Can be more efficient if each getter needs to perform a different operation.
	+ Cons:
		- May incur overhead due to the number of function calls.
		- May lead to slower performance if the getters are complex or perform many operations.
* **Single Method**:
	+ Pros:
		- Typically faster, as it reduces the number of function calls.
		- Can be more efficient for simple cases with few variables.
	+ Cons:
		- More difficult to read and understand, especially for complex logic.
		- May require additional memory allocation for the `getVars` method.

**Library**

Neither test case uses a specific library. However, both classes `Method` and `Getters` use JavaScript's built-in object features, such as getters and constructors.

**Special JS Feature or Syntax**

This benchmark does not explicitly use any special JavaScript features or syntax beyond what is standard in the language.

**Alternative Approaches**

Other approaches to accessing variables from an object could include:

* **Property Access**: Directly accessing properties of the object using dot notation (e.g., `obj.propertyName`).
* **Method Call with Object Prototype**: Calling a method on an object's prototype, which can be slower due to the search path rules in JavaScript.
* **Closure**: Using a closure to encapsulate variables and functions that access them.

Keep in mind that the choice of approach depends on the specific use case, performance requirements, and personal preference.

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36

Browser/OS: Chrome 80 on Linux

View result in a separate tab

Test name	Executions per second
getter tree	8896424.0 Ops/sec
single method	16905956.0 Ops/sec

Related benchmarks:

getter tree vs single method (version: 0)

Comparing performance of: getter tree vs single method

Created: 7 years ago by: Guest

Jump to the latest result

getter tree

single method

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):