Benchmark: IndexOf LodashVsLoopBased

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var collection=[],i;
var toCheck=[];
for(i=0;i<10000;i++){
  let a=Math.floor(Math.random()*1000)+1;
  let b=Math.floor(Math.random()*100)+1;
  let c=Math.floor(Math.random()*10)+1;
  let d=Math.floor(Math.random()*10000)+1;
  if(i==5000)
    toCheck=["a",a ,"b",b];
  collection.push({"a":a,"b":b,"c":c,"d":d});
}

var indexOf  = (function(){
  	var isArray = Array.isArray;
    return function(collection,predicate,fromIndex){
       	let catchedElemIndex = -1;
      	if(!isArray(collection)) return -1;
      	let len = collection.length;
      	let startIndex = (fromIndex === undefined)?0:((fromIndex+len)%len);
        if(typeof(predicate) === 'function'){
            for(let i=startIndex;i<len;i++){
                if(predicate(collection[i]) === true){
                    catchedElemIndex = i;
                    break;
                }
            }
        }
        else if(isArray(predicate)){
           for(let i=startIndex;i<len;i++){
				if(collection[i][predicate[0]] === predicate[1]){
                     catchedElemIndex = i;
                     break;
                }
           }
        }
        else{
          	var toCheck = predicate;
            for(let i=startIndex;i<len;i++){
                if(collection[i].hasOwnProperty(toCheck)){
                    catchedElemIndex = i;
                    break;
                }
            }
        }
        return catchedElemIndex;
    }
}());

Tests:

Lodash
_.findIndex(collection,toCheck);
ClosureBased
indexOf(collection,toCheck);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash
ClosureBased

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

Let's dive into the explanation of what is tested on the provided JSON and analyze the options compared.

**Benchmark Definition**

The benchmark measures the performance of two approaches to find an element in a collection:

1. **Lodash**: Uses the `_.findIndex` function from the Lodash library, which iterates over the collection and checks each element against the predicate.
2. **ClosureBased**: A custom implementation using a closure (an anonymous function) that takes the collection, predicate, and starting index as arguments.

**Options Compared**

The two options are compared in terms of their execution speed. The benchmark measures the number of executions per second for each option.

**Pros and Cons of Each Approach**

1. **Lodash:**
	* Pros:
		+ Well-tested and optimized implementation from a popular library.
		+ Simplifies code writing and readability.
	* Cons:
		+ External dependency on Lodash, which may not be desirable in all scenarios.
		+ May introduce additional overhead due to the need to load the library.
2. **ClosureBased:**
	* Pros:
		+ Self-contained implementation without external dependencies.
		+ Can potentially offer better performance due to reduced overhead.
	* Cons:
		+ Requires more manual effort and expertise in implementing the closure.
		+ May result in less readable code.

**Library: Lodash**

Lodash is a popular JavaScript library that provides a collection of functional programming helpers, including the `_.findIndex` function. It is widely used in the industry due to its ease of use and performance.

The Lodash library is used as part of the benchmark to measure the performance of the `_.findIndex` function. The `Html Preparation Code` includes a script tag that loads the Lodash library, making it available for use in the benchmark.

**Special JS Feature or Syntax**

The closure (an anonymous function) used in the `ClosureBased` implementation is a JavaScript feature that allows creating a function without declaring its name. This technique can be useful in certain scenarios, such as when working with closures in programming.

However, there is no special JavaScript feature or syntax explicitly mentioned in this benchmark.

Related benchmarks:

IndexOf LodashVsLoopBased (version: 0)

Comparing performance of: Lodash vs ClosureBased

Created: 5 years ago by: Registered User

Jump to the latest result

Lodash

ClosureBased

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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