Benchmark: flattening - MeasureThat.net

Tests:

concat
var params = [[1, 2, params], [ "hello", true, 7 ]]; var other = [].concat.apply([], params);
reduce
var params = [[ 1, 2 ], [ "hello", true, 7 ]]; var other = params.reduce((acc, val) => acc.concat(val), []);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
concat
reduce

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.77 Safari/537.36

Browser/OS: Chrome 91 on Linux

View result in a separate tab

Test name	Executions per second
concat	5478620.5 Ops/sec
reduce	3734631.8 Ops/sec

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

LLMs can make mistakes. Check important info.

I'll break down the explanation into smaller sections to make it easier to understand.

**Benchmark Definition Json**

The provided JSON represents a benchmark definition, which is essentially a template for creating and running JavaScript microbenchmarks on MeasureThat.net. The key elements of this definition are:

* `Name`: A unique name for the benchmark.
* `Description`: An optional description of the benchmark, but in this case, it's null.
* `Script Preparation Code` and `Html Preparation Code`: These fields are left blank, indicating that no custom preparation code is needed for the benchmark.

**Individual Test Cases**

There are two individual test cases defined in the JSON:

1. **concat**: This test case uses a script with the following content:
```javascript
var params = [[1, 2, params], [ "hello", true, 7]];
var other = [].concat.apply([], params);
```
This script defines an array `params` and then uses the `concat` method to concatenate an array with itself.

2. **reduce**: This test case uses a script with the following content:
```javascript
var params = [[1, 2], ["hello", true, 7]];
var other = params.reduce((acc, val) => acc.concat(val), []);
```
This script defines an array `params` and then uses the `reduce` method to concatenate each element of the array into a new array.

**Options Compared**

In this benchmark, two different approaches are compared:

1. **concat**: This approach uses the `concat` method to concatenate an array with itself.
2. **reduce**: This approach uses the `reduce` method to concatenate each element of the array into a new array.

**Pros and Cons**

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

* **concat**:
	+ Pros: Simple and straightforward, easy to understand.
	+ Cons: May not be as efficient as other approaches, can lead to unnecessary memory allocation.
* **reduce**:
	+ Pros: More efficient than `concat` in some cases, allows for more control over the concatenation process.
	+ Cons: Can be less intuitive for beginners, may require more memory allocation.

**Library and Special JS Features**

Neither of these test cases uses any libraries or special JavaScript features beyond standard ECMAScript. The only notable thing is that `params` contains itself as a property (e.g., `[1, 2, params]`). This is a common technique in functional programming to create recursive data structures.

**Other Alternatives**

There are other alternatives for concatenating arrays in JavaScript, such as using the spread operator (`[...array, ...array]`) or `Array.prototype.push.apply(array, array)`. However, these approaches might not be directly comparable to the `concat` and `reduce` methods used in this benchmark.

In general, when choosing between `concat`, `reduce`, and other alternatives, consider factors such as:

* Performance: How efficient is each approach for large datasets?
* Readability: Which approach is more intuitive and easier to understand?
* Control: Do you need fine-grained control over the concatenation process?

Ultimately, the choice of approach depends on your specific use case, performance requirements, and personal preference.

Related benchmarks:

flattening (version: 0)

Comparing performance of: concat vs reduce

Created: 3 years ago by: Guest

Jump to the latest result

concat

reduce

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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