Benchmark: Array fill method vs for loop with object ref 2

Tests:

For Loop fill
const creation_date = new Date(); const dataItemToCreate = { creation_date, product_id: 1, warehouse_id: 1, owner_seller_id: 1, item_origin_type_id: 5, origin_supplier_order_package_content_id: 1, lot_number: null, origin_stock_adjustment_id: null, origin_buyer_return_order_line_item_id: null, serial_number: null, item_target_type_id: null, target_sell_order_line_item_id: null, target_stock_adjustment_id: null, target_withdrawal_order_line_item_id: null, expiration_date: null }; let arrayTest = new Array(10000000).fill(dataItemToCreate);
Array Fill
const creation_date = new Date(); const dataItemToCreate = { creation_date, product_id: 1, warehouse_id: 1, owner_seller_id: 1, item_origin_type_id: 5, origin_supplier_order_package_content_id: 1, lot_number: null, origin_stock_adjustment_id: null, origin_buyer_return_order_line_item_id: null, serial_number: null, item_target_type_id: null, target_sell_order_line_item_id: null, target_stock_adjustment_id: null, target_withdrawal_order_line_item_id: null, expiration_date: null }; let arrayTest = new Array(); for (let i = 0; i < 10000000; i++){ arrayTest.push(dataItemToCreate) }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
For Loop fill
Array Fill

Fastest: N/A

Slowest: N/A

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

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The provided JSON represents two test cases for measuring the performance of JavaScript in creating and filling arrays using different methods.

**What is being tested?**

In this benchmark, we are testing the performance of two methods to create an array of objects:

1. **Array Fill**: This method uses the `fill()` method to initialize all elements of an array with a given value.
2. **For Loop with Object Reference**: This method uses a traditional for loop to push objects onto an array.

**Options being compared**

The benchmark is comparing the performance of these two methods:

* Array Fill (using the `fill()` method)
* For Loop with Object Reference (using a traditional for loop)

**Pros and Cons of each approach**

1. **Array Fill**:
	* Pros:
		+ Efficient and concise way to create an array of objects.
		+ Fast execution time, as it uses a single system call under the hood.
	* Cons:
		+ May not work as expected if the object is complex or has nested properties.
2. **For Loop with Object Reference**:
	* Pros:
		+ Can be used when working with arrays that need to be modified dynamically.
		+ Allows for more control over the creation process, especially when dealing with complex objects.
	* Cons:
		+ More verbose and slower than the `fill()` method.
		+ Requires a loop to push each object onto the array, which can lead to slower performance.

**Library used**

In this benchmark, no external libraries are used. The `fill()` method is a native JavaScript function that comes built-in with the language.

**Special JS feature or syntax**

The `fill()` method uses a system call under the hood to create the array. This allows it to be faster and more efficient than traditional for loops. However, this also means that it may not work as expected if used in certain edge cases or browsers that don't support it.

**Other alternatives**

There are other methods to create an array of objects, such as using `Array.from()` or `Array.prototype.map()`. These methods can be useful in specific situations but may have performance implications compared to the `fill()` method.

Here's a brief comparison:

* `Array.from()`: Creates an array from an iterable source. May be slower than `fill()` for large arrays.
* `Array.prototype.map()`: Applies a transformation function to each element of an array and returns a new array. Can be slower than `fill()` due to the additional iteration.
* Manual array creation using a traditional for loop: This is similar to the For Loop with Object Reference approach used in this benchmark, but may be slower due to the overhead of the loop.

In summary, the `fill()` method is a fast and efficient way to create an array of objects, while the For Loop with Object Reference approach provides more control over the creation process.

Related benchmarks:

Array fill method vs for loop with object ref 2 (version: 0)

Array fill method vs for loop performance validation

Comparing performance of: For Loop fill vs Array Fill

Created: 3 years ago by: Guest

Jump to the latest result

For Loop fill

Array Fill

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):