Benchmark: name12 - MeasureThat.net

Script Preparation code:

var a = [{foo: true},{bar: 1}]

Tests:

++
const symResults = []; for (let i = 0; i < a.length; i++) { symResults.push({...a[i], ...a[++i]}); }
+=
const symResults = []; for (let i = 0; i < a.length; i+=2) { symResults.push({...a[i], ...a[i+1]}); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
++
+=

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 29 days ago):

LLMs can make mistakes. Check important info.

Let's dive into the world of MeasureThat.net and understand what's being tested.

**Benchmark Definition**

The provided benchmark definition is a JSON object that represents a JavaScript microbenchmark. Here's a breakdown of its components:

* `Name`: The name of the benchmark, which in this case is "name12".
* `Description`: An optional description of the benchmark, which is not provided.
* `Script Preparation Code` and `Html Preparation Code`: These are code snippets that are executed before running the benchmark.

In this case, the script preparation code defines an array `a` with two objects: `{foo: true}` and `{bar: 1}`. The html preparation code is empty.

**Individual Test Cases**

There are two test cases in the benchmark:

* **Test Case 1:** `++`
	+ The benchmark definition is a JavaScript function that pushes the result of an object manipulation operation onto an array `symResults`.
	+ The implementation uses a simple loop to iterate over the elements of array `a` and creates new objects by merging each element with the next one using the spread operator (`{...a[i], ...a[++i]}`).
* **Test Case 2:** `+`
	+ The benchmark definition is similar to Test Case 1, but with a twist: it uses the modulo operator (`i += 2`) to iterate over every other element of array `a` and creates new objects by merging each element with the next one using the spread operator (`{...a[i], ...a[i+1]}`).

**Comparison of Options**

The two test cases compare different approaches to creating objects from arrays:

* **Test Case 1:** Uses a simple loop and merges elements using the spread operator.
* **Test Case 2:** Uses a loop with an incrementing index and merges elements using the spread operator, but only every other element.

**Pros and Cons**

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

* **Test Case 1:**
	+ Pros:
		- Simple to understand and implement.
		- May be faster due to fewer operations.
	+ Cons:
		- Can lead to slower performance for larger arrays.
* **Test Case 2:**
	+ Pros:
		- May be faster for larger arrays due to fewer operations.
	+ Cons:
		- More complex implementation.
		- May introduce additional overhead due to the incrementing index.

**Library and Purpose**

There is no library explicitly mentioned in the benchmark definition. However, the use of the spread operator (`...`) suggests that the benchmark is testing the performance of JavaScript's object assignment syntax.

**Special JS Feature or Syntax**

The benchmark does not explicitly test any special JavaScript features or syntax. The focus is on comparing different approaches to creating objects from arrays using basic JavaScript constructs.

**Other Alternatives**

If you were to create a similar benchmark, you might consider alternative approaches to creating objects from arrays, such as:

* Using `Array.prototype.map()` and `Object.assign()`
* Using `Array.prototype.reduce()` and `Object.assign()`
* Using a library like Lodash's `merge` function

Keep in mind that the performance differences between these approaches may be negligible for small arrays, but can become significant for larger datasets.

Latest run results:

Run details: (Test run date: 6 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36

Browser/OS: Chrome 67 on Windows

View result in a separate tab

Test name	Executions per second
++	1187949.1 Ops/sec
+=	1225789.1 Ops/sec

Related benchmarks:

name12 (version: 0)

Comparing performance of: ++ vs +=

Created: 6 years ago by: Guest

Jump to the latest result

++

+=

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 29 days ago):