Benchmark: testaafiltervsforloop

Script Preparation code:


var arr = [{"name": "nimi1", "value": 1}, {"name": "nimi2", "value": 200}, {"name": "nimi3", "value": 6.6}];
var oldArr = [{"name": "nimi1", "value": 1}, {"name": "nimi2", "value": 5000}, {"name": "nimi3", "value": 6.6}];

Tests:

filter
let parameterListContainingOnlyChangedParameters = arr.filter((changedParameter, index) => { return arr.value !== oldArr[index].value; });
map
let parameterListContainingOnlyChangedParameters = []; arr.map((changedParameter, index) => { if (changedParameter.value !== oldArr[index].value) { parameterListContainingOnlyChangedParameters.push(changedParameter) } })

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
filter
map

Fastest: N/A

Slowest: N/A

Latest 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 is tested, compared, and their pros and cons.

**Benchmark Overview**

The benchmark tests two approaches to filter an array: `filter` and `map`. Both methods are used to create a new array containing only elements from the original array where a specific condition is met. The test compares the performance of these two approaches on different inputs.

**Approaches Compared**

1. **Filter**: This approach uses the `Array.prototype.filter()` method, which returns a new array with all elements that pass the test implemented by the provided function.
2. **Map**: This approach uses the `Array.prototype.map()` method, which creates a new array populated with the results of calling a provided function on every element in the original array.

**Pros and Cons**

1. **Filter**
	* Pros:
		+ More concise and readable code
		+ Easier to understand for those familiar with functional programming
	* Cons:
		+ Creates an intermediate array, which can lead to increased memory usage
		+ May be slower due to the creation of an additional array
2. **Map**
	* Pros:
		+ Less memory-intensive since it doesn't create a new array
		+ Can be faster because it avoids creating an intermediate array
	* Cons:
		+ More verbose code compared to filter
		+ May require more mental effort to understand for those unfamiliar with functional programming

**Library and Special Features**

In this benchmark, the following libraries or special features are not explicitly mentioned:

* No external libraries are used.
* No special JavaScript features or syntax are highlighted.

**Other Alternatives**

If you're looking for alternative approaches to filter an array in JavaScript, here are a few options:

1. **forEach**: You can use `Array.prototype.forEach()` along with a callback function to iterate over the array and push elements to a new array.
2. **Reduce**: You can use `Array.prototype.reduce()` to create a new array by accumulating elements based on a condition.
3. **For loops**: You can use traditional for loops to iterate over the array and add elements to a new array.

While these alternatives might be more verbose or less efficient than `filter` and `map`, they can still provide a good alternative depending on the specific requirements of your project.

In summary, the benchmark tests two common approaches to filter an array in JavaScript: `filter` and `map`. The `filter` approach is more concise but may lead to increased memory usage, while the `map` approach is less memory-intensive but more verbose.

Related benchmarks:

testaafiltervsforloop (version: 0)

test

Comparing performance of: filter vs map

Created: 3 years ago by: Guest

Jump to the latest result

filter

map

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):