Benchmark: Assignment of value vs Destructuring an object with random

Tests:

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

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

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net.

The provided JSON represents two individual test cases for measuring the performance difference between assignment and destructuring objects in JavaScript. Here's what's being tested:

**Options being compared:**

1. **Assignment**: Assigning a value to a variable, specifically `const i = obj.a.e.i;`.
2. **Destructuring**: Extracting values from an object using destructuring syntax, specifically `const { i } = obj.a.e;`.

**Pros and Cons of each approach:**

*   **Assignment**:
    *   Pros:
        *   Simple and straightforward to implement.
        *   Less overhead due to the absence of explicit property access or variable extraction.
    *   Cons:
        *   May result in slower performance due to the need for additional calculations (e.g., accessing `obj.a.e.i`).
*   **Destructuring**:
    *   Pros:
        *   Can lead to more efficient performance since it avoids unnecessary calculations and direct property access.
        *   More readable code, as it separates variable extraction from object manipulation.

**Library usage:**

There is no explicit library mentioned in the benchmark definition or test cases. However, MeasureThat.net does support using external libraries for specific tasks.

**Special JS feature or syntax:**

The test cases utilize JavaScript's destructuring syntax, which allows extracting values from objects into separate variables. This syntax was introduced in ECMAScript 2015 (ES6) and has since become a standard feature in modern JavaScript engines.

**Other alternatives:**

For comparing performance between assignment and destructuring, you might also consider using:

1.  **Property access**: Accessing properties directly on an object using dot notation (`obj.a.e.i`).
2.  **Array methods**: Using array-like methods (e.g., `Array.prototype.map()`) to manipulate objects.
3.  **Map functions**: Employing `Map()` functions or other data structure-related operations.

These alternatives might not directly compare the performance of assignment vs. destructuring but can provide additional insights into object manipulation and data processing efficiency in JavaScript.

**Benchmark preparation code:**

The provided script preparation code is minimal, only defining a sample object `obj` with nested properties:

```javascript
const obj = {a: { e: { i: Math.random() } }};
```

This setup allows the test cases to focus on measuring performance differences between assignment and destructuring.

Related benchmarks:

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

Comparing performance of: Assign vs Destructure

Created: 3 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):