Run results for: Comparing caching speeds to function speed

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.121 Safari/537.36

Browser: Chrome 72

Operating system: Windows

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
JSON.stringify	113265.2 Ops/sec
Function	856237.6 Ops/sec

Script Preparation code:

var a = [
  {
    "identifier": "OLDC_29322_5891_0_366851",
    "value": "asdfas",
    "metaName": "Lev2Value",
    "iteration": 0,
    "cellAccessMode": "edit",
    "maskType": "[General]",
    "dataType": "char",
    "action": "update",
    "maskTypeId": 483,
    "subScreenDataId": 0,
    "subScreenId": 0,
    "rowDataId": 16378324,
    "rowId": 76169
  },
  {
    "identifier": "OLDC_29322_5891_1_366851",
    "value": "wqerqa",
    "metaName": "Lev2Value",
    "iteration": 1,
    "cellAccessMode": "edit",
    "maskType": "[General]",
    "dataType": "char",
    "action": "add",
    "maskTypeId": 483,
    "subScreenDataId": 0,
    "subScreenId": 0,
    "rowDataId": 16378324,
    "rowId": 76169
  },
  {
    "identifier": "OLDC_29322_5891_2_366851",
    "value": "asdfa",
    "metaName": "Lev2Value",
    "iteration": 2,
    "cellAccessMode": "edit",
    "maskType": "[General]",
    "dataType": "char",
    "action": "add",
    "maskTypeId": 483,
    "subScreenDataId": 0,
    "subScreenId": 0,
    "rowDataId": 16378324,
    "rowId": 76169
  },
  {
    "identifier": "OLDC_29322_5891_3_366851",
    "value": "ZXcz",
    "metaName": "Lev2Value",
    "iteration": 3,
    "cellAccessMode": "edit",
    "maskType": "[General]",
    "dataType": "char",
    "action": "add",
    "maskTypeId": 483,
    "subScreenDataId": 0,
    "subScreenId": 0,
    "rowDataId": 16378324,
    "rowId": 76169
  },
  {
    "identifier": "OLDC_29322_5891_4_366851",
    "value": "qwerqwer",
    "metaName": "Lev2Value",
    "iteration": 4,
    "cellAccessMode": "edit",
    "maskType": "[General]",
    "dataType": "char",
    "action": "add",
    "maskTypeId": 483,
    "subScreenDataId": 0,
    "subScreenId": 0,
    "rowDataId": 16378324,
    "rowId": 76169
  }
];

var b = [
  {
    "identifier": "OLDC_29322_5891_0_366851",
    "value": "asdfas",
    "metaName": "Lev2Value",
    "iteration": 0,
    "cellAccessMode": "edit",
    "maskType": "[General]",
    "dataType": "char",
    "action": "update",
    "maskTypeId": 483,
    "subScreenDataId": 0,
    "subScreenId": 0,
    "rowDataId": 16378324,
    "rowId": 76169
  },
  {
    "identifier": "OLDC_29322_5891_1_366851",
    "value": "wqerqa",
    "metaName": "Lev2Value",
    "iteration": 1,
    "cellAccessMode": "edit",
    "maskType": "[General]",
    "dataType": "char",
    "action": "add",
    "maskTypeId": 483,
    "subScreenDataId": 0,
    "subScreenId": 0,
    "rowDataId": 16378324,
    "rowId": 76169
  },
  {
    "identifier": "OLDC_29322_5891_2_366851",
    "value": "asdfa",
    "metaName": "Lev2Value",
    "iteration": 2,
    "cellAccessMode": "edit",
    "maskType": "[General]",
    "dataType": "char",
    "action": "add",
    "maskTypeId": 483,
    "subScreenDataId": 0,
    "subScreenId": 0,
    "rowDataId": 16378324,
    "rowId": 76169
  },
  {
    "identifier": "OLDC_29322_5891_3_366851",
    "value": "ZXcz",
    "metaName": "Lev2Value",
    "iteration": 3,
    "cellAccessMode": "edit",
    "maskType": "[General]",
    "dataType": "char",
    "action": "add",
    "maskTypeId": 483,
    "subScreenDataId": 0,
    "subScreenId": 0,
    "rowDataId": 16378324,
    "rowId": 76169
  },
  {
    "identifier": "OLDC_29322_5891_4_366851",
    "value": "qwerqwer",
    "metaName": "Lev2Value",
    "iteration": 4,
    "cellAccessMode": "edit",
    "maskType": "[General]",
    "dataType": "char",
    "action": "add",
    "maskTypeId": 483,
    "subScreenDataId": 0,
    "subScreenId": 0,
    "rowDataId": 16378324,
    "rowId": 76169
  }
];

Tests:

JSON.stringify
JSON.stringify(a);
Function
const sourceOptions = { array: [], repeatsAt: false, }; const sourceOptionsIndex = {}; a.forEach((entry) => { if (entry.value && entry.value.trim() && !sourceOptionsIndex[entry.value.trim()]) { sourceOptionsIndex[entry.value.trim()] = true; sourceOptions.array.push(entry); } else if (entry.value) { sourceOptions.repeatsAt = entry.identifier; } });

Run results for: Comparing caching speeds to function speed

A structure for checking whether caching/memoization is worth it

JSON.stringify

Function