Benchmark: Assignment of value vs Destructuring an object v2

Script Preparation code:

var obj = {a: { e: { i: 6, title: "", desc: "" }, items: [] }, b: { e: {g: {}}} };

Tests:

Assign
const i = obj.a.e.i; console.log(i);
Destructure
const {a: {e: {i}}} = obj; console.log(i);

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:

No previous run results

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

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I'd be happy to explain the benchmark and its test cases.

**Benchmark Definition**

The provided JSON represents a JavaScript microbenchmark called "Assignment of value vs Destructuring an object v2". The purpose of this benchmark is to compare the performance of two approaches: assigning a value directly and using destructuring to extract values from an object.

**Script Preparation Code**

The script preparation code sets up a sample object `obj` with nested properties:
```javascript
var obj = {a: { e: { i: 6, title: "", desc: "" }, items: [] }, b: { e: {g: {} } }};
```
This object represents a real-world scenario where you might want to extract values from an object.

**Html Preparation Code**

The HTML preparation code is empty (`null`), which means that the benchmark doesn't require any HTML setup or rendering.

**Individual Test Cases**

There are two test cases:

1. **Assign**: This test case assigns the value `i` directly:
```javascript
const i = obj.a.e.i;
console.log(i);
```
2. **Destructure**: This test case uses destructuring to extract the value `i` from the object:
```javascript
const {a: {e: {i}}} = obj;
console.log(i);
```
**Comparison of Options**

The benchmark compares two approaches:

* **Assign**: Directly assigns the value `i` using a variable.
* **Destructure**: Uses destructuring to extract the value `i` from the object.

Pros and Cons:

* **Assign**:
	+ Pros: Simple, easy to understand, and might be more readable for some developers.
	+ Cons: Can be slower due to the creation of a new variable.
* **Destructure**:
	+ Pros: More concise and efficient, as it avoids creating a new variable.
	+ Cons: Might be less readable for some developers, especially those unfamiliar with destructuring.

**Library and Special JS Features**

There is no specific library used in this benchmark. However, the test cases use modern JavaScript features like:

* Destructuring assignment (introduced in ECMAScript 2015)
* Template literals (introduced in ECMAScript 2015)

These features are widely supported in most modern browsers and Node.js environments.

**Other Alternatives**

If you wanted to compare alternative approaches, some options could include:

* Using a function call instead of assigning directly: `obj.a.e.i()`
* Using an array or other data structure to store the value: `[obj.a.e.i]`
* Using a more complex object or nested functions to achieve similar results

However, these alternatives might not be as straightforward or efficient as the original assign and destructure approaches.

Related benchmarks:

Assignment of value vs Destructuring an object v2 (version: 0)

Most real example of Assignment of value vs Destructuring an object

Comparing performance of: Assign vs Destructure

Created: 4 years ago by: Registered User

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):