Benchmark: Lodash min & max vs math.min & math.max vs for loop (positive & negative float)

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.10.1/lodash.min.js'></script>

Script Preparation code:

function getRandomInt(max) {
  num = Math.random() * 10000;
  num *= Math.round(Math.random()) ? 1 : -1;
  return num;
}

var arr = [];
for(var i = 0; i < 2000; i++){
  arr.push({value:getRandomInt(5000)});
}

Tests:

_.max
_.max(arr); _.min(arr);
Math.max
Math.max(...arr) Math.min(...arr)
for loop
let min = 0; let max = 0; for (let index = 0; index < arr.length; index++) { const element = arr[index]; if (arr[index] < min) { min = arr[index]; } if (arr[index] > max) { max = arr[index]; } }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
_.max
Math.max
for loop

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what is being tested.

**Benchmark Overview**

The benchmark compares three approaches to find the minimum and maximum values in an array:

1. `_.max` (using Lodash library)
2. `Math.max` (built-in JavaScript function)
3. A custom for loop approach

**Lodash (`_.max`)**

* Library: Lodash is a popular utility library that provides a wide range of functions for tasks such as string manipulation, array manipulation, and more.
* Purpose: The `_.max` function returns the largest value in an array.

In this benchmark, `_.max` is used to find the maximum value in the generated array. The test measures how long it takes to execute this function.

**Built-in JavaScript (`Math.max`)**

* Syntax: `Math.max(...arr)` (using rest parameter syntax)
* Purpose: The `Math.max` function returns the largest value of a set of arguments provided as an argument.

In this benchmark, `Math.max` is used twice: once to find the maximum value in the array and again to compare it with another value. The test measures how long it takes to execute these two calls.

**Custom For Loop Approach**

* Syntax:
```javascript
let min = 0;
let max = 0;
for (let index = 0; index < arr.length; index++) {
  const element = arr[index];
  if (arr[index] < min) {
    min = arr[index];
  }
  if (arr[index] > max) {
    max = arr[index];
  }
}
```
* Purpose: This approach iterates through the array and keeps track of the minimum and maximum values found so far.

The test measures how long it takes to execute this custom for loop approach.

**Other Considerations**

* The benchmark uses a large array of 2000 elements, each with a random integer value between -5000 and 5000. This generates a large dataset that can be used to measure performance.
* The test is run on a Chrome browser (version 90) on a Mac OS X 10.14.0 platform.

**Alternatives**

If you were to rewrite this benchmark, you could consider the following alternatives:

* Using `Array.prototype.reduce` instead of Lodash's `_max`
* Using `Math.min` and `Math.max` with an initial value of `-Infinity` and `Infinity` respectively
* Using a different data structure, such as a binary search tree or a heap, to find the minimum and maximum values in the array

However, keep in mind that these alternatives may not provide accurate results if they are not optimized for performance.

**Pros and Cons**

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

* Lodash (`_.max`):
	+ Pros: Easy to use, well-maintained library
	+ Cons: Adds overhead due to function call and memory allocation
* Built-in JavaScript (`Math.max`):
	+ Pros: Fast, lightweight, and optimized for performance
	+ Cons: Limited functionality compared to Lodash's `_max`
* Custom For Loop Approach:
	+ Pros: Allows for fine-grained control over iteration and data access
	+ Cons: Can be slower due to the overhead of manual iteration and comparison

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.93 Safari/537.36

Browser/OS: Chrome 90 on Mac OS X 10.14.0

View result in a separate tab

Test name	Executions per second
_.max	1076.7 Ops/sec
Math.max	2465.3 Ops/sec
for loop	840.9 Ops/sec

Related benchmarks:

Lodash min & max vs math.min & math.max vs for loop (positive & negative float) (version: 0)

Comparing performance of: _.max vs Math.max vs for loop

Created: 3 years ago by: Guest

Jump to the latest result

_.max

Math.max

for loop

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):