Benchmark: constants - MeasureThat.net

Script Preparation code:

const Type = {
  UNKNOWN: 0,
  STRING: 2,
  NUMBER: 3,
  OBJECT: 4
};

var object = {
  number: 1,
  string: "one"
};

var number = 1;
var string = "one";

function f1(v) {
	switch (typeof v) {
      case "object": return Type.OBJECT;
      case "string": return Type.STRING;
      case "number": return Type.NUMBER;
      default: return Type.UNKNOWN;
    }
}

const UNKNOWN = Type.UNKNOWN,
  STRING = Type.STRING,
  NUMBER = Type.NUMBER,
  OBJECT = Type.OBJECT;

function f2(v) {
	switch (typeof v) {
      case "object": return OBJECT;
      case "string": return STRING;
      case "number": return NUMBER;
      default: return UNKNOWN;
    }
}

Tests:

Constant as object property
f1(object); f1(string); f1(number);
Just constant
f2(object); f2(string); f2(number);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Constant as object property
Just constant

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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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 and explain what's being tested.

**Benchmark Definition**

The benchmark definition is a JSON object that represents two functions, `f1` and `f2`, which take an input variable `v`. The functions use a switch statement to determine the type of the input based on its value. The types are defined as constants: UNKNOWN (0), STRING (2), NUMBER (3), and OBJECT (4).

**Script Preparation Code**

The script preparation code is provided, which includes:

* Defining an object `Type` with the constant values.
* Creating variables `object`, `number`, and `string`.
* Defining two functions, `f1` and `f2`, which take a variable `v` as input.

**Html Preparation Code**

There is no HTML preparation code provided.

**Individual Test Cases**

The benchmark includes two test cases:

* **Constant as object property**: This test case calls `f1(object)`, `f1(string)`, and `f1(number)` in sequence.
* **Just constant**: This test case calls `f2(object)`, `f2(string)`, and `f2(number)` in sequence.

**Library Usage**

The benchmark does not use any libraries. All the logic is implemented directly in the JavaScript code.

**Special JS Features or Syntax**

There are no special JavaScript features or syntax used in this benchmark. The code is straightforward and uses standard JavaScript constructs.

**Options Compared**

In this benchmark, two approaches are compared:

1. **f1**: This function uses a switch statement to determine the type of the input based on its value.
2. **f2**: This function also uses a switch statement, but with some differences:
	* It returns constants `OBJECT`, `STRING`, and `NUMBER` directly for certain cases.
	* The default case still returns `UNKNOWN`.

**Pros and Cons**

The pros and cons of these approaches are:

1. **f1**:
	* Pros: More explicit type checking, easier to maintain.
	* Cons: Can be slower due to the switch statement overhead.
2. **f2**:
	* Pros: Potentially faster execution, as some cases return constants directly.
	* Cons: Less explicit type checking, may lead to errors if not handled correctly.

**Other Considerations**

When comparing these two approaches, consider factors such as:

* Performance: How will the switch statement and constant returns impact performance?
* Maintainability: Which approach is easier to maintain and update in the future?
* Error handling: How will you handle cases where the input type is not one of the expected values?

**Alternatives**

Other alternatives for implementing similar functionality might include:

1. **Using `typeof` operator**: Instead of a switch statement, you could use the `typeof` operator to check the type of the input.
2. **Using `instanceof` operator**: If you're working with objects, you could use the `instanceof` operator to check if an object is an instance of a particular class.
3. **Using a lookup table**: Instead of using constants, you could create a lookup table that maps input types to specific values or functions.

These alternatives might offer different trade-offs in terms of performance, maintainability, and readability.

Related benchmarks:

constants (version: 0)

Comparing performance of: Constant as object property vs Just constant

Created: 6 years ago by: Guest

Jump to the latest result

Constant as object property

Just constant

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):