Benchmark: class set get (getters, function, direct)

Script Preparation code:

class Class {
    constructor () {
        this._val = 1
    }
    get value() { return this._val }
    set value(x) { this._val = x }
    getValue() { return this._val }
    setValue(x) { this.val = x }
}
var i = 0;
var cls = new Class()
var wtf

Tests:

getter
cls.value = i++; wtf = cls.value;
Getter function
cls.setValue(i++); wtf = cls.getValue();
Directly get
cls._val = i++; wtf = cls._val;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
getter
Getter function
Directly get

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

Let's break down the provided JSON and explain what's being tested.

**Benchmark Definition**

The benchmark definition is a JavaScript class with three properties: `value`, `getValue()`, and `setValue()`. The constructor initializes `this._val` to 1. The `value` property has getter and setter methods, while the `_val` variable can be directly accessed.

The script preparation code creates an instance of this class (`cls`) and assigns a value to it (`wtf`). This setup allows us to test different ways of accessing the class's internal state.

**Options Compared**

Three options are compared:

1. **Getter**: `cls.value`
2. **Getter function**: `cls.getValue()`
3. **Directly get**: `cls._val`

These three approaches have different pros and cons:

*   **Getter**: This is a syntactic sugar for accessing the class's internal state through a property name (`value`). It provides a more intuitive way of accessing the value but may not be as fast as directly accessing the `_val` variable.
*   **Getter function**: This approach involves calling a named function to get the value. It might be slower than directly accessing `_val` due to the overhead of function calls.
*   **Directly get**: This is the most straightforward way of accessing the class's internal state by using the variable name (`_val`). However, it bypasses any potential getter or setter logic.

**Library and Special Features**

In this benchmark, there are no external libraries used. Additionally, JavaScript features such as `const`, `let`, `for...of` loops, or arrow functions are not explicitly mentioned in the benchmark definition code.

**Other Alternatives**

If we were to add more test cases, we might consider including:

*   **Setter**: Testing how accessing the class's internal state through a setter method (`cls.setValue(x)`) compares to directly accessing `_val`.
*   **Property access with `in` operator**: Comparing the performance of accessing properties using the dot notation (`cls.value`) versus the bracket notation (`cls['value']`).
*   **Property access using a custom property accessor**: Implementing and testing a custom property accessor (e.g., a function that returns the value) to compare its performance with the existing getter methods.

The specific alternatives will depend on the goals of the benchmark and the requirements for comparison.

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/110.0

Browser/OS: Firefox 110 on Windows

View result in a separate tab

Test name	Executions per second
getter	5995147.0 Ops/sec
Getter function	5434462.5 Ops/sec
Directly get	8346190.5 Ops/sec

Related benchmarks:

class set get (getters, function, direct) (version: 0)

Comparing performance of: getter vs Getter function vs Directly get

Created: one year ago by: Guest

Jump to the latest result

getter

Getter function

Directly get

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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