Benchmark: deepcopy - MeasureThat.net

Script Preparation code:

obj = {	sum: {
                    calc: "wSum",               //sum, wSum, ave, wAve, hwAve
                    forGroup: true,
                },
                formatting: {
                    dataType: "number",       //[int, number, pct1, pct100, folioCurrency, assetCurrency]
                },
                tableDisplay: {
                    visibility: "user",          //always, default, user
                    editable: true,
                    columnTemplate_name: "number",
                    showSumInGroup: true,
                    showSum: true,
                    formatting: {
                        dataType: "number",       //[int, number, pct1, pct100, folioCurrency, assetCurrency]
                        decimals: 1,
                        //preFix: "",
                        //postFix: "",
                    },
                    //this triggers on click of the button, as well as on double-tap and long-tap on a touch device
                    headerButtonMenu: [
                        {text: "Remove Column", method: "removeField"}
                    ],
                    cellContextMenu: [
                        {text: "Clear", method: "clearCell"},
                    ],
                    headerContextMenu: [
                        {text: "Clear All", method: "clearColumn"},
                    ]
                }
            }
                  
 
deepClone_simple = function(o) {
    let isArray = Array.isArray;
    let objectKeys = Object.keys;
    return copy(o);

    function copy(val) {
        if (!val) return val;
        if (isArray(val)) {
            let arr = [];
            let length = val.length;
            for (let i = 0; i < length; i++) {
              val2 = val[i]
              if (isArray(val2)) {
                  let arr2 = [];
                  let length2 = val.length;
                  for (let i = 0; i < length; i++) arr.push(copy(val[i]))
                  return arr;
              } else if (typeof val === 'object') {
                  let keys = objectKeys(val);
                  let newObject = {};
                  for (let i = keys.length - 1; i > -1; i--) {
                      let key = keys[i];
                      newObject[key] = copy(val[key]);
                  }
                  return newObject;
              }
              return val;
              arr.push(copy(val[i]))
            }
            return arr;
        } else if (typeof val === 'object') {
            let keys = objectKeys(val);
            let newObject = {};
            for (let i = keys.length - 1; i > -1; i--) {
                let key = keys[i];
                newObject[key] = copy(val[key]);
            }
            return newObject;
        }
        return val;
    }
}

deepClone = function(o){
    // if not array or object or is null return self
    let deepClone = this.deepClone;
    if (typeof o !== 'object'||o === null) return o;
    let newO, i;
    // handle case: array
    if (o instanceof Array) {
        let l, i;
        newO = [];
        for (i = 0, l = o.length; i < l; i++) newO[i] = deepClone(o[i]);
        return newO;
    }
    // handle case: object
    newO = {};
    for (i in o) if (o.hasOwnProperty(i)) newO[i] = deepClone(o[i]);
    return newO;
}

deepCloneOrAssign = function(o, dest){
    // only deep assigns objects and arrays, NOT dates, maps, sets etc.
    let deepCloneOrAssign = this.deepCloneOrAssign;
    if (typeof o !== 'object'||o === null) return o;
    let newO, i;
    // handle case: array
    if (o instanceof Array) {
        dest = dest ?? [];
        let l, i;
        for (i = 0, l = o.length; i < l; i++) dest[i] = deepCloneOrAssign(o[i], dest[i]);
        return newO;
    }
    // handle case: object
    dest = dest ?? {};
    for (i in o) if (o.hasOwnProperty(i)) dest[i] = deepCloneOrAssign(o[i], dest[i]);
    return dest;
}

Tests:

deepClone
return deepClone(obj)
deepClone_simple
return deepClone_simple(obj)
deepCloneOrAssign
return deepCloneOrAssign(obj)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
deepClone
deepClone_simple
deepCloneOrAssign

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36

Browser/OS: Chrome 109 on Windows

View result in a separate tab

Test name	Executions per second
deepClone	146022.2 Ops/sec
deepClone_simple	105194.8 Ops/sec
deepCloneOrAssign	163797.5 Ops/sec

deepcopy (version: 0)

Comparing performance of: deepClone vs deepClone_simple vs deepCloneOrAssign

Created: one year ago by: Registered User

Jump to the latest result

deepClone

deepClone_simple

deepCloneOrAssign

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A