Benchmark: Array fill method vs for loop with object

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(); for (let i = 0; i < arrayTest.length; i++){ arrayTest.push({ ...dataItemToCreate, defective: false }) }
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(10000000).fill({ ...dataItemToCreate, defective: false });

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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**What is being tested?**

The provided JSON represents a JavaScript microbenchmark test case. It compares the performance of two approaches for filling an array with objects.

**Options being compared:**

There are two options being compared:

1. **For Loop with Object**: This approach uses a traditional `for` loop to push objects onto the array.
2. **Array Fill**: This approach uses the `fill()` method to populate the entire array with objects in a single operation.

**Pros and Cons of each approach:**

**For Loop with Object:**

Pros:

* More control over the iteration process
* Can be more efficient for smaller arrays or arrays that need custom logic

Cons:

* Can be slower for large arrays due to the overhead of the `for` loop
* More prone to errors if not implemented correctly

**Array Fill:**

Pros:

* Faster for large arrays as it eliminates the overhead of a `for` loop
* More concise and expressive code

Cons:

* Less control over the iteration process
* May not be suitable for smaller arrays or arrays that require custom logic

**Other considerations:**

* The use of object destructuring (`...dataItemToCreate`) allows for more concise code, but may introduce additional overhead due to the creation of temporary objects.
* The `defective` property is added to each object in both approaches, which may be unnecessary if not all objects need it.

**Library usage:**

None of the provided code uses a JavaScript library. However, it's worth noting that some browsers may have optimized implementations of the `fill()` method or other array methods that could impact performance.

**Special JS features:**

The test case uses object destructuring (`...dataItemToCreate`), which is a modern JavaScript feature introduced in ECMAScript 2018 (ES2018). This feature allows for more concise code and easier object manipulation, but may not be supported by older browsers or versions of Node.js.

**Alternatives:**

Other approaches to filling an array with objects could include:

* Using a `forEach` loop instead of a traditional `for` loop
* Utilizing the `map()` method to create a new array with transformed objects
* Leveraging libraries like Lodash or Ramda for more functional programming-style solutions

However, the comparison between the two approaches provided in the benchmark (For Loop with Object vs Array Fill) is likely intended to focus on the performance differences between these two common methods.

Related benchmarks:

Array fill method vs for loop with object (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):