Run results for: GroupBy

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36

Browser: Chrome 71

Operating system: Windows

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Lodash groupBy	677.1 Ops/sec
Ramda groupBy	387.2 Ops/sec
Hand written	45.7 Ops/sec
Using Reduce	811.4 Ops/sec

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.10.1/lodash.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/ramda/0.25.0/ramda.min.js"></script>

Script Preparation code:

function Rand(x) {
  return Math.floor(Math.random() * x);
}

const arr = R.map(x => { return {room: {name: Rand(x)}, structureType: Rand(x)}; }, R.repeat(30, 10000));

function GetArray() { return arr; }

function SortMyStructs()
{
    Game = {};
  	Game.structures = GetArray();

    Game.mStructs = { };
    Game.mStructs.mRooms = { };
    Game.mObservers = [ ];

    for (let structIter in Game.structures)
    {
        const structure = Game.structures[structIter];
        const roomName = structure.room.name;
        const type = structure.structureType;

        if (undefined === Game.mStructs.mRooms[roomName])
        {
            Game.mStructs.mRooms[roomName] = { };
            Game.mStructs.mRooms[roomName].mAll = [ ];
            Game.mStructs.mRooms[roomName].mType = { };
        }

        Game.mStructs.mRooms[roomName].mAll.push(structure);

        if (undefined === Game.mStructs.mRooms[roomName].mType[type])
        {
           Game.mStructs.mRooms[roomName].mType[type] = [ ];
        }

        Game.mStructs.mRooms[roomName].mType[type].push(structure);
    }
};

Tests:

Lodash groupBy
const tmp = _.groupBy(GetArray(), x => x.room.name); const tmp2 = _.forEach(tmp, (val, key) => tmp[key] = _.groupBy(tmp[key], x => x.structureType)); tmp2;
Ramda groupBy
R.pipe( R.groupBy(x => x.room.name), R.map(R.groupBy(x => x.structureType)) )(GetArray());
Hand written
SortMyStructs();
Using Reduce
_.reduce(GetArray(), (acc, x) => { if (!acc.mRooms) acc.mRooms = {}; if (!acc.mRooms[x.room.name]) acc.mRooms[x.room.name] = {mAll: [], mType: {}}; acc.mRooms[x.room.name].mAll.push(x); if (!acc.mRooms[x.room.name].mType[x.structureType]) acc.mRooms[x.room.name].mType[x.structureType] = []; acc.mRooms[x.room.name].mType[x.structureType].push(x); return acc; }, {});

Lodash vs Ramda

Lodash groupBy

Ramda groupBy

Hand written

Using Reduce