Benchmark: Find with Assignment of value vs Destructuring an object

Tests:

Assign
const attrib = [{name: 'a'}, {name: 'b'}, {name: 'x'}] attrib.find(a => a.name === 'x')
Destructure
const attrib = [{name: 'a'}, {name: 'b'}, {name: 'x'}] attrib.find(({name}) => name === 'x')

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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Let's break down the JavaScript microbenchmark on MeasureThat.net.

**Benchmark Overview**

The benchmark is designed to compare the performance of two approaches: finding an element in an array using assignment (`assign`) versus destructuring an object (using the `find()` method with destructuring syntax).

**Assignment Approach**

In this approach, the `assign` method uses a traditional array indexing technique to find the desired element. The `attrib.find()` method is used to search for the first element that satisfies the condition `a => a.name === 'x'`. In essence, the code is using a loop to iterate through each element in the array and checks if its `name` property matches `'x'`.

Pros:

* Widely supported and well-known syntax.
* Easy to understand and implement.

Cons:

* May require more iterations to find the desired element compared to destructuring.
* Can be slower for large datasets due to the overhead of indexing.

**Destructuring Approach**

In this approach, the `find()` method is used with destructuring syntax to search for the first element that satisfies the condition. The code uses a single expression `{ (name) => name === 'x' }` and applies it to each element in the array using `(a) => { ... }(a)`.

Pros:

* Can be faster and more efficient than assignment approach, especially for large datasets.
* Reduces overhead of indexing and iteration.

Cons:

* Requires modern JavaScript features (ES6+ syntax).
* May not be as widely supported or well-known compared to the assignment approach.

**Library Usage**

There is no library usage in this benchmark. The code uses only built-in JavaScript features.

**Special JS Feature/Syntax**

The benchmark utilizes a modern JavaScript feature: destructuring syntax (`{ (name) => name === 'x' }`). This syntax was introduced in ECMAScript 2015 (ES6) and allows for concise and expressive way to define functions that take an object as an argument. In this case, the destructuring syntax is used within the `find()` method to search for the desired element.

**Other Alternatives**

If you're looking for alternatives to measure performance or optimize code, consider using:

1. V8 Benchmark Suite: A set of benchmarks designed by Google's V8 engine to test various JavaScript performance scenarios.
2. JSPerf: A benchmarking tool that allows users to compare the performance of different JavaScript implementations and techniques.
3. Microbenchmarks: Small, self-contained benchmarks that focus on specific aspects of JavaScript performance.

Keep in mind that these alternatives might have different focuses or requirements compared to MeasureThat.net's microbenchmarking approach.

I hope this explanation helps! Let me know if you have further questions.

Related benchmarks:

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

Comparing performance of: Assign vs Destructure

Created: 4 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):