Benchmark: Assignment of value vs Destructuring 3 11 times an object

Tests:

Assign
const a = [1,2,3,4,5,6,7,8,9,10]; const b = [...a]; console.log(b);
Destructure
const a = [1,2,3,4,5,6,7,8,9,10]; const b = [1,2,3,4,5,6,7,8,9,10]; console.log(b);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Assign
Destructure

Fastest: N/A

Slowest: N/A

Latest run results:

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

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**Benchmark Definition**

The benchmark definition is essentially the script that defines the test case. In this case, there are two test cases:

1. **Assignment of value vs Destructuring 3 11 times an object**: This test case measures the performance difference between assigning a new array to a variable using the assignment operator (`const b = [1,2,3,4,5,6,7,8,9,10];`) and destructuring an existing array using the spread operator (`const b = [...a];`).
2. **Assignment of value vs Destructure**: This test case is similar to the previous one, but with a twist: it measures the performance difference between assigning a new array to a variable using the assignment operator (`const b = [1,2,3,4,5,6,7,8,9,10];`) and destructuring an existing array using the spread operator.

**Options Compared**

In both test cases, two options are compared:

* **Assignment**: Using the assignment operator to create a new array.
* **Destructure**: Using the spread operator to create a new array by copying the elements of an existing array.

**Pros and Cons**

Here's a brief summary of the pros and cons of each approach:

* **Assignment**:
	+ Pros: Simple, widely supported, and easy to understand.
	+ Cons: Can be slower for large arrays due to memory allocation and assignment overhead.
* **Destructure**:
	+ Pros: Faster for large arrays, as it avoids the overhead of assigning a new array using `const b = [1,2,3,4,5,6,7,8,9,10];`.
	+ Cons: Requires JavaScript 2015 (ES6+) support and may not work in older browsers or environments.

**Library and Purpose**

In this benchmark, there is no explicit library mentioned. However, it's likely that the spread operator (`...`) is a part of the ECMAScript standard, which is implemented by modern JavaScript engines.

**Special JS Feature or Syntax**

There are no special features or syntaxes used in these test cases. The code is straightforward and uses only basic JavaScript operators.

**Other Alternatives**

If you're interested in exploring alternative approaches to this benchmark, here are a few options:

* **Using `Array.prototype.slice()`**: Instead of using the spread operator, you could use `Array.prototype.slice()` to create a new array: `const b = a.slice();`. This approach is similar to assignment but uses a method call instead.
* **Using a library like Lodash**: If you want to explore more advanced techniques or use a library like Lodash, which provides utility functions for working with arrays, you could try using its `_.cloneDeep()` function: `const b = _.cloneDeep(a);`. This approach would provide more control over the cloning process but might be slower due to additional overhead.

Keep in mind that these alternative approaches may not be as efficient or readable as the original test cases. The spread operator is often a good choice for creating new arrays, especially when working with large datasets.

Related benchmarks:

Assignment of value vs Destructuring 3 11 times an object (version: 0)

Comparing performance of: Assign vs Destructure

Created: 2 years ago by: Guest

Jump to the latest result

Assign

Destructure

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):