Benchmark: testachunk4 - MeasureThat.net

Tests:

1
function chunkArraySlice(array, size) { let result = [] for (i = 0; i < array.length; i += size) { let chunk = array.slice(i, i + size) result.push(chunk) } return result } console.log(chunkArraySlice([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15], 5));
2
function chunkArray(myArray, chunk_size){ var results = []; while (myArray.length) { results.push(myArray.splice(0, chunk_size)); } return results; } console.log(chunkArray([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15], 5));
3
const chunkIt = (arr, size) => { let buckets = [] // Just create the buckets/chunks storage for (let i = 1; i <= Math.ceil(arr.length / size); i++) { buckets.push([]) } // Put in the buckets/storage by index access only for (let i = 0; i < arr.length; i++) { var arrIndex = Math.ceil((i + 1) / size) - 1 buckets[arrIndex].push(arr[i]) } return buckets; } console.log(chunkIt([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15], 5));

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
1
2
3

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

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

The provided JSON represents three JavaScript microbenchmarks, each testing different approaches to chunking an array of numbers into smaller sub-arrays.

**Options compared:**

1. **Array slicing**: The first two benchmark definitions use this approach, which creates a new sub-array from the original array using the `slice` method.
2. **Array splicing**: The second benchmark definition uses this approach, which modifies the original array by removing and replacing elements with another array.
3. **Bucketing**: The third benchmark definition uses a more complex approach called bucketing, where an array is divided into fixed-size chunks (buckets) using index calculation.

**Pros and cons of each approach:**

1. **Array slicing**:
	* Pros: Simple, efficient, and easy to understand.
	* Cons: Creates new objects, can lead to memory fragmentation.
2. **Array splicing**:
	* Pros: Modifies the original array in-place, potentially more memory-efficient.
	* Cons: Can be slower due to the overhead of modifying an array, may cause issues with array indexing.
3. **Bucketing**:
	* Pros: More efficient than array slicing or splicing for large arrays, as it avoids creating new objects.
	* Cons: Requires index calculation, can be less intuitive, and may lead to over-allocation if not implemented carefully.

**Library usage:**

None of the benchmark definitions use a library, but they do demonstrate different JavaScript features, such as:

* `slice` method (array slicing)
* `splice` method (array splicing)

**Special JS feature or syntax:**

The chunking approaches rely on basic JavaScript array operations and data structures. No special features or syntax are required to understand these benchmarks.

**Other alternatives:**

If you need to chunk an array, consider the following alternatives:

1. **Use a library**: Libraries like `lodash` or `array-chunk` provide efficient and convenient ways to chunk arrays.
2. **Use a custom implementation with caching**: Implementing your own chunking function with caching can be more efficient than using built-in methods.

In summary, the provided JSON benchmarks demonstrate three different approaches to chunking an array: array slicing, array splicing, and bucketing. Each approach has its pros and cons, and the choice of which one to use depends on the specific requirements of your application.

Related benchmarks:

testachunk4 (version: 0)

Comparing performance of: 1 vs 2 vs 3

Created: 5 years ago by: Guest

Jump to the latest result

1

2

3

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):