Benchmark: for vs reduce for object

Script Preparation code:

var gsmCells = [
        {
            "countrycode": 250,
            "operatorid": 2,
            "lac": 9703,
            "cellid": 23446,
            "signal_strength": -75
        },
        {
            "countrycode": 250,
            "operatorid": 2,
            "lac": 9703,
            "cellid": 59141,
            "signal_strength": -76
        },
        {
            "countrycode": 250,
            "operatorid": 2,
            "lac": 9703,
            "cellid": 6924,
            "signal_strength": -80
        },
        {
            "countrycode": 250,
            "operatorid": 2,
            "lac": 9703,
            "cellid": 23449,
            "signal_strength": -81
        }
    ];

Tests:

reduce
gsmCells.reduce((prev, curr) => prev.signal_strength > curr.signal_strength ? prev : curr );
for
let max = gsmCells[0]; for(let i = 0; i < gsmCells.length; i++){ if(gsmCells[i].signal_strength > max.signal_strength) max = gsmCells[i]; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
reduce
for

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser/OS: Chrome 121 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
reduce	16359835.0 Ops/sec
for	2031256.5 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided JSON and explain what is tested on MeasureThat.net.

**Benchmark Definition**

The benchmark definition represents a JavaScript function that compares the signal strength of gsmCells objects using two different approaches:

1. `reduce`: The `reduce` method is used to find the object with the maximum signal strength.
2. `for`: A traditional `for` loop is used to iterate through the `gsmCells` array and update the `max` variable if a cell with higher signal strength is found.

**Options Compared**

The two options being compared are:

* `reduce`: A built-in JavaScript method that applies a callback function to each element in an array, reducing it to a single value.
* `for`: A traditional loop construct used for iterating through arrays or other iterable objects.

**Pros and Cons of Each Approach**

* `reduce`:
	+ Pros: Concise, efficient, and easy to read.
	+ Cons: May be less intuitive for developers who are not familiar with array methods, can be slower than traditional loops in some cases due to the overhead of the callback function.
* `for`:
	+ Pros: Well-known and widely used, allowing developers to easily understand the code.
	+ Cons: Can be longer and more verbose than `reduce`, potentially leading to less efficient execution.

**Library**

The `gsmCells` array is an example of a JavaScript array, which is an object that stores multiple values in a single unit. The `signal_strength` property is a nested value within each object.

In this benchmark, the `reduce` method is used to find the object with the maximum signal strength, while the `for` loop iterates through the array and updates the `max` variable accordingly.

**Special JavaScript Feature**

There is no special JavaScript feature or syntax mentioned in the provided code. However, it's worth noting that some newer JavaScript features, such as `let` and `const`, may be used in the actual benchmark code but are not explicitly mentioned in the provided examples.

**Other Alternatives**

If you wanted to implement this benchmark using a different approach, here are some alternatives:

* Using `Math.max()`: You could use the `Math.max()` function to find the maximum signal strength directly within the array.
* Using `Array.prototype.map()` and `Array.prototype.reduce()` together: You could use `map()` to create a new array with only the signal strengths and then apply `reduce()` to find the maximum value.

However, since MeasureThat.net already provides a way to run and compare different JavaScript approaches using its built-in test cases and benchmarking framework, exploring these alternatives may not be necessary.

Related benchmarks:

for vs reduce for object (version: 0)

Comparing performance of: reduce vs for

Created: 2 years ago by: Guest

Jump to the latest result

reduce

for

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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