Benchmark: Testy Test - MeasureThat.net

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/lodash/4.16.0/lodash.min.js"></script>

Script Preparation code:

var value = {a: 30310, b: 100303, c: 3040494};

Tests:

Lodash map
_.map(value, (v) => v+1)
Keys loop
Object.keys(value).map((v) => v+1)
For...in
const newValue = [] for (v in value) { newValue.push(v+1) }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash map
Keys loop
For...in

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

I'll break down the explanation into smaller parts.

**Benchmark Definition**

The provided JSON represents a JavaScript benchmark, which is a set of test cases designed to measure the performance of different programming approaches in JavaScript. The benchmark definition includes:

* **Script Preparation Code**: This section contains the code that sets up the environment for each test case. In this case, it creates an object `value` with three properties: `a`, `b`, and `c`. This object will be used as input for the test cases.
* **Html Preparation Code**: This section includes a script tag that loads the Lodash library (version 4.16.0) from a CDN. Lodash is a popular JavaScript utility library that provides various functions for tasks like array manipulation, string processing, and more.

**Test Cases**

The benchmark definition includes three test cases:

1. **Lodash map**: This test case uses the `_.map()` function from Lodash to transform each element in the `value` object by adding 1.
2. **Keys loop**: This test case uses a simple loop to iterate over the properties of the `value` object and add 1 to each property value.
3. **For...in**: This test case uses a traditional `for...in` loop to iterate over the properties of the `value` object and add 1 to each property value.

**Options compared**

The benchmark compares three different approaches:

* **Lodash map**: Uses Lodash's `_.map()` function to transform the array.
* **Keys loop**: Uses a traditional loop to iterate over the array.
* **For...in**: Uses a `for...in` loop to iterate over the object.

**Pros and Cons**

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

* **Lodash map**: Pros:
	+ Often faster due to optimized implementation
	+ Reduced memory allocation overhead
	+ Easier to read and write code
Cons:
	+ Adds dependency on Lodash library
	+ May not be suitable for all use cases (e.g., non-array data)
* **Keys loop**: Pros:
	+ Simple and easy to understand
	+ No additional dependencies required
Cons:
	+ Can be slower due to iteration overhead
	+ More verbose code
* **For...in**: Pros:
	+ Can be faster for large datasets
	+ Avoids dependency on Lodash library
Cons:
	+ More complex and error-prone than Keys loop
	+ May not work correctly with non-enumerable properties

**Library: Lodash**

Lodash is a popular JavaScript utility library that provides various functions for tasks like array manipulation, string processing, and more. In this benchmark, the `_.map()` function is used to transform each element in the `value` object.

**Special JS Feature/Syntax: None**

There are no special JavaScript features or syntax used in this benchmark.

**Alternatives**

Some alternatives to the approaches compared in this benchmark include:

* Using other libraries like Array.prototype.map() or modern array methods (e.g., `map()`, `forEach()`)
* Implementing custom loops or iterators
* Using functional programming techniques (e.g., arrow functions, closures)
* Utilizing Web Assembly or other low-level optimization techniques

Keep in mind that the choice of approach depends on the specific use case and performance requirements.

Latest run results:

Run details: (Test run date: 5 years ago)

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 13_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0 Mobile/15E148 Safari/604.1

Browser/OS: Mobile Safari 13 on iOS 13.0

View result in a separate tab

Test name	Executions per second
Lodash map	3363274.2 Ops/sec
Keys loop	3513897.8 Ops/sec
For...in	1140105.2 Ops/sec

Related benchmarks:

Testy Test (version: 0)

Comparing performance of: Lodash map vs Keys loop vs For...in

Created: 5 years ago by: Guest

Jump to the latest result

Lodash map

Keys loop

For...in

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):