Benchmark: Teste forEach x map

Tests:

Teste forEach
console.log(extractIdsFromInvoiceTags()); function extractIdsFromInvoiceTags() { let tagIds = []; let invoiceTags = {"tags": [{"id": 1}, {"id": 2}, {"id": 3}]}; if (invoiceTags && invoiceTags.tags && invoiceTags.tags.length) { invoiceTags.tags.forEach(tagInfo => { tagIds.push(tagInfo.id); }) return tagIds; } }
Test map
console.log(extractIdsFromInvoiceTags()); function extractIdsFromInvoiceTags() { let invoiceTags = {"tags": [{"id": 1}, {"id": 2}, {"id": 3}]}; if (invoiceTags && invoiceTags.tags && invoiceTags.tags.length) { return invoiceTags.tags.map(tagInfo => tagInfo.id) } }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Teste forEach
Test map

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Android 14; Mobile; rv:130.0) Gecko/130.0 Firefox/130.0

Browser/OS: Firefox Mobile 130 on Android

View result in a separate tab

Test name	Executions per second
Teste forEach	110549.3 Ops/sec
Test map	108862.2 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmarking scenario.

**Benchmark Definition**

The provided JSON defines two benchmarks: `Teste forEach` and `Test map`. The script preparation code is empty, indicating that no additional setup or initialization needs to be performed for these tests. The HTML preparation code is also empty, suggesting that this test suite does not rely on any specific HTML structure.

**Benchmark Script**

The benchmark scripts are simple JavaScript functions:

1. `extractIdsFromInvoiceTags()`: This function takes an object with a "tags" property as input and returns an array of IDs from the tags. The script uses the `forEach` loop to iterate over the tags and push their IDs into an array.
2. `extractIdsFromInvoiceTags()` (alternative): This version of the function uses the `map` method to create a new array with the tag IDs.

**Comparison**

The two benchmarks are comparing the performance of using `forEach` versus `map` when extracting IDs from an object's "tags" property.

**Options Compared**

*   **Using `forEach`:**
    *   Pros:
        *   Can be used in scenarios where you need to perform some action on each element of an array (e.g., updating the state, triggering an event).
        *   Allows for more control over the iteration process.
    *   Cons:
        *   Generally slower than `map` due to the overhead of function calls and arguments passing.
        *   Returns a modified version of the original array.
*   **Using `map`:**
    *   Pros:
        *   Typically faster than `forEach` since it avoids the overhead of function calls and arguments passing.
        *   Creates a new array without modifying the original one.

**Considerations**

The choice between using `forEach` or `map` depends on your specific use case:

*   Use `forEach` when you need to perform some action on each element, like updating state or triggering events. However, be aware that it may come with performance penalties.
*   Prefer `map` for simple array transformations where speed is crucial.

**Library**

There's no explicit library mentioned in the provided benchmarking scenario.

**Special JS Feature/Syntax**

Since there's no specific mention of special JavaScript features or syntax in this test case, we can assume that standard JavaScript (ECMAScript) rules apply.

**Alternatives**

If you're interested in exploring alternative approaches for extracting IDs from an object's "tags" property:

*   **Lodash's `forEach` and `map` functions**: You could use Lodash's utility functions, which provide additional features like memoization or the ability to return new arrays.
*   **Array.prototype.reduce()**: An alternative approach would be using the `reduce()` method to iterate over the tags and accumulate the IDs into an array.

Here is some example code for each of these alternatives:

```javascript
// Lodash's forEach and map functions:
const _ = require('lodash');

let invoiceTags = { "tags": [{ "id": 1 }, { "id": 2 }, { "id": 3 }] };
const idsUsingLodash = _.map(invoiceTags.tags, tagInfo => tagInfo.id);

// Array.prototype.reduce():
let idsUsingReduce = invoiceTags.tags.reduce((ids, tagInfo) => [...ids, tagInfo.id], []);
```

This comparison focuses on the `forEach` and `map` methods from standard JavaScript.

Related benchmarks:

Teste forEach x map (version: 0)

Comparing performance of: Teste forEach vs Test map

Created: one year ago by: Registered User

Jump to the latest result

Teste forEach

Test map

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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