Benchmark: testasdfs - MeasureThat.net

Script Preparation code:


var funcMap = {
  'a': 1,
  'b': 2,
  'c': 3,
  'd': 4,
  'e': 5
}


function getRandomKey() {
  var rIdx = Math.floor(Math.random() * 5);
  return Object.keys(funcMap)[rIdx];
}

Tests:

using funcMap
var key = getRandomKey(); var x = funcMap[key]; console.log(x);
using switch
var key = getRandomKey(); var x; switch(key) { case 'a': x = 1; break; case 'b': x = 2; break; case 'c': x = 3; break; case 'd': x = 4; break; case 'e': x = 5; break; } console.log(x);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
using funcMap
using switch

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 dive into the explanation of the provided benchmark JSON.

**What is tested on the provided JSON?**

The provided JSON represents two individual test cases for measuring JavaScript microbenchmarks using MeasureThat.net. The tests aim to compare the performance of two approaches: using an object map (`funcMap`) and using a switch statement with multiple cases.

**Options compared**

There are two options being compared:

1. **Using `funcMap`**: This approach uses an object map to store key-value pairs, where the keys are the strings 'a' through 'e', and the values are integers 1 through 5. The `getRandomKey()` function is used to select a random key from the map.
2. **Using switch statement**: This approach uses a switch statement with multiple cases to achieve similar functionality as using `funcMap`. The switch statement checks the value of the randomly generated key and assigns the corresponding integer value to the variable `x`.

**Pros and cons of each approach**

1. **Using `funcMap`**:
	* Pros:
		+ Easier to read and maintain, especially for complex cases.
		+ Faster lookup times since objects are typically faster than switch statements.
	* Cons:
		+ Requires more memory since the object map needs to be created and stored in memory.
2. **Using switch statement**:
	* Pros:
		+ More straightforward and efficient when dealing with a small, fixed set of cases.
		+ Can be beneficial for code readability and maintainability.
	* Cons:
		+ Can be slower than using `funcMap` since the JavaScript engine needs to execute the switch statement's logic.

**Library**

There is no explicit library mentioned in the provided JSON. However, it appears that the `Object.keys()` method and the `Math.random()` function are used from the built-in JavaScript environment, which does not require a specific library.

**Special JS feature or syntax**

The `getRandomKey()` function uses the `Math.random()` function to generate a random index between 0 and 4. This is an example of using a utility function in JavaScript.

**Benchmark preparation code explanation**

The benchmark preparation code consists of two parts:

1. **`Script Preparation Code`**: The code defines a variable `funcMap` that maps keys (strings 'a' through 'e') to values (integers 1 through 5). It also defines the `getRandomKey()` function, which selects a random key from the map.
2. **`Html Preparation Code`**: This field is empty in the provided JSON, indicating that no HTML code is required for this benchmark.

**Other alternatives**

If you wanted to explore alternative approaches, here are some options:

1. **Using an array instead of `funcMap`**: Instead of using an object map (`funcMap`), you could use a simple array with the same keys and values. This would eliminate the need for the `getRandomKey()` function.
2. **Using a different data structure, such as a trie or a binary search tree**: Depending on your specific requirements, you might consider using a more complex data structure to store your key-value pairs.

Keep in mind that these alternatives would likely change the performance characteristics of the benchmark compared to using `funcMap` or a switch statement.

Related benchmarks:

testasdfs (version: 0)

test

Comparing performance of: using funcMap vs using switch

Created: 9 years ago by: Guest

Jump to the latest result

using funcMap

using switch

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):