Benchmark: some unique name na prawde + mapa + nic

Tests:

spread operator
var params = [ "hello", true, 7 ] var other = [...params].map(param => param);
concat
var params = [ "hello", true, 7 ] var other = [].concat(params).map(param => param);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
spread operator
concat

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

I'd be happy to explain what's being tested in the provided benchmark.

The benchmark compares two different ways of performing a simple operation: mapping an array. In this case, we're comparing the new ES6 spread operator (`...`) with the traditional `concat()` method.

**Spread Operator Approach**

The first test case uses the spread operator to create a new array from an existing one:
```javascript
var params = [ "hello", true, 7 ];
var other = [...params].map(param => param);
```
This approach is often referred to as "object rest spread" (rest-spread), which was introduced in ECMAScript 2015. It allows you to create a new array by spreading the elements of an existing array.

**Concatenation Approach**

The second test case uses the `concat()` method to achieve the same result:
```javascript
var params = [ "hello", true, 7 ];
var other = [].concat(params).map(param => param);
```
This approach creates a new empty array using `[]`, and then concatenates the original `params` array to it using `concat()`.

**Comparison**

The benchmark compares the performance of these two approaches across different browsers (Chrome 89) on desktop devices with Windows operating systems. The results are measured in executions per second.

**Pros and Cons**

* **Spread Operator Approach**
	+ Pros:
		- More concise and expressive code
		- Can be faster for large arrays, since it avoids the overhead of creating a new array using `concat()`
	+ Cons:
		- May not work as expected with older browsers or environments that don't support rest-spread syntax
* **Concatenation Approach**
	+ Pros:
		- Widely supported across different browsers and environments
		- Can be easier to understand for developers who are familiar with `concat()`
	+ Cons:
		- May be slower than the spread operator approach, especially for large arrays

**Library Usage**

There is no library usage in this benchmark. Both approaches rely solely on built-in JavaScript features.

**Special JS Features**

There is a special feature mentioned: rest-spread syntax (introduced in ECMAScript 2015). This feature allows you to create new arrays by spreading the elements of an existing array, as seen in the spread operator approach.

**Other Alternatives**

If you're interested in exploring alternative approaches, here are a few:

* **Array.prototype.slice()**: You can use `slice()` to create a shallow copy of an array, which can then be mapped over.
```javascript
var params = [ "hello", true, 7 ];
var other = params.slice().map(param => param);
```
* **Underscore.js's _.map()**: If you're working with large datasets and need more advanced array manipulation functionality, consider using a library like Underscore.js.
```javascript
const _ = require('underscore');
var params = [ "hello", true, 7 ];
var other = _.map(params, param => param);
```
Note that these alternatives may not be as concise or expressive as the spread operator approach, but they can provide more flexibility and power for complex array operations.

Related benchmarks:

some unique name na prawde + mapa + nic (version: 0)

Compare the new ES6 spread operator with the traditional concat() method

Comparing performance of: spread operator vs concat

Created: 5 years ago by: Guest

Jump to the latest result

spread operator

concat

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):