Run results for: slice version 2

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36

Browser: Chrome 124

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

ByReduce

8K/s

BySlice

6K/s

View exact numbers

Test name	Executions per second
✓ ByReduce	7,581 Ops/sec
BySlice	5,905 Ops/sec

Script Preparation code:


    const chunkByLoop = (array,size)=>{
        const chunked = [];
        for(let i=0;i<array.length;i++){
            const chunk = chunked[chunked.length-1];
            chunk?.length < size ? chunk.push(array[i]) :  chunked.push([array[i]])
        }
        return chunked;
    }

    const chunkByReduce = (array,size)=>{
        const result = array.reduce(((acc, item)=>{
            const chunk = acc[acc.length-1];
            chunk?.length < size ? chunk.push(item) :  acc.push([item])
            return acc;
        }),[]);
        return result;
    }

    const chunkBySlice = (array,size)=>{
        const chunked = [];
        if (size === 0) 
            return chunked;

        const slicesNumber = array.length%size ? Math.ceil(array.length/size) : array.length/size;
        for(let i=0;i<slicesNumber;i++){
            chunked.push(array.slice(i*size,i*size+size))
        }
        return chunked;
    }
    
    var checkResult = (expected,actual)=>{
        return Array.isArray(expected) &&  Array.isArray(actual) && expected.length === actual.length &&
        expected.every((chunk,index)=> Array.isArray(chunk) && chunk.every(item => actual[index].includes(item)))
    }
    
    
    var funMap = {
        "ByLoop":chunkByLoop,
        "ByReduce":chunkByReduce,
        "BySlice":chunkBySlice
    };

Tests:

BySlice
const chunk = funMap["BySlice"]; const arrEmpty = chunk([],1); console.log("case 1",checkResult(arrEmpty,[])); const simpleCase = chunk([1,2,3,4],2); console.log("case 2",checkResult(simpleCase,[[1,2],[3,4]])); const advancedCase = chunk([1,2,3,4],3); console.log("case 3",checkResult(advancedCase,[[1,2,3],[4]]));
ByReduce
const chunk = funMap["ByReduce"]; const arrEmpty = chunk([],1); console.log("case 1",checkResult(arrEmpty,[])); const simpleCase = chunk([1,2,3,4],2); console.log("case 2",checkResult(simpleCase,[[1,2],[3,4]])); const advancedCase = chunk([1,2,3,4],3); console.log("case 3",checkResult(advancedCase,[[1,2,3],[4]]));