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

Latest run results:

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

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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.

Related benchmarks:

getter tree vs single method (version: 0)

Comparing performance of: getter tree vs single method

Created: 9 years ago by: Guest

Jump to the latest result

getter tree

single method

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):