Benchmark: _.filter + _.map vs array push in _.forEach vs _.reduce

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/clone/2.1.2/clone.min.js"></script>

Script Preparation code:

var objs = [
      {
        "name": "test1",
        "characters": [
          {
            "_id": "5b59a34561a2220011900b7e",
            "characterID": "5ab48ce869b013001d26f49b",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
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          {
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            "characterID": "5ab48ce869b013001d26f49c",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b7c",
            "characterID": "5ab48ce869b013001d26f49d",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b7b",
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            "maxSpawn": 1
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          {
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            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
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          {
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          },
          {
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            "characterID": "5ab48ce969b013001d26f535",
            "level": 1,
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            "maxSpawn": 1
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          {
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            "characterID": "5ab48ce969b013001d26f53c",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
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            "maxSpawn": 1
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            "level": 1,
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            "maxSpawn": 1
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          {
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            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
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          {
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            "characterID": "5ab48ce969b013001d26f55b",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b5e",
            "characterID": "5ab48ce969b013001d26f568",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b5d",
            "characterID": "5ab48ce969b013001d26f569",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b5c",
            "characterID": "5ab48ce969b013001d26f56b",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
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          {
            "_id": "5b59a34561a2220011900b5b",
            "characterID": "5ab48ce969b013001d26f57e",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b5a",
            "characterID": "5ab48ce969b013001d26f585",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
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          {
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            "characterID": "5ab48ce969b013001d26f587",
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            "level": 1,
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          {
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            "characterID": "5ab48ce969b013001d26f598",
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          {
            "_id": "5b59a34561a2220011900b55",
            "characterID": "5ab48ce969b013001d26f5a0",
            "level": 1,
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            "maxSpawn": 1
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          {
            "_id": "5b59a34561a2220011900b54",
            "characterID": "5ab48ce969b013001d26f5ab",
            "level": 1,
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            "maxSpawn": 1
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            "characterID": "5ab48ce969b013001d26f5ad",
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            "maxSpawn": 1
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            "characterID": "5b05276604041f001de1cecf",
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            "maxSpawn": 1
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          {
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            "characterID": "5b05276604041f001de1ced1",
            "level": 1,
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            "maxSpawn": 1
          },
          {
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            "characterID": "5b05276604041f001de1ceda",
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            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b4e",
            "characterID": "5b05276604041f001de1cee6",
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          {
            "_id": "5b59a34561a2220011900b4d",
            "characterID": "5b05276604041f001de1cee7",
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            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b4c",
            "characterID": "5b05276604041f001de1ceee",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b4b",
            "characterID": "5b1614bf6b9868001df21f39",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b4a",
            "characterID": "5b1614bf6b9868001df21f3c",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b49",
            "characterID": "5b1614bf6b9868001df21f44",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
            "_id": "5b59a34561a2220011900b48",
            "characterID": "5b166a1d6b9868001df22509",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
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            "characterID": "5b166a1d6b9868001df2250b",
            "level": 1,
            "spawnRate": 24,
            "maxSpawn": 1
          },
          {
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            "characterID": "5b166a1d6b9868001df22512",
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            "spawnRate": 24,
            "maxSpawn": 1
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            "characterID": "5b334034d075be001dd96d2e",
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            "characterID": "5b334034d075be001dd96d42",
            "level": 1,
            "spawnRate": 24,
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          {
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          },
          {
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          {
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          {
            "_id": "5b59a34561a2220011900b2c",
            "characterID": "5b50690fce0e3d001d4377d8",
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          },
          {
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            "characterID": "5b50690fce0e3d001d4377d9",
            "level": 1,
            "spawnRate": 24,
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        ],
        "itemCatches": [],
        "itemConsumables": [],
        "landmark": null
      }
    ]

Tests:

_.filter + _.map
var results = _(objs).filter(obj => obj.characters.level == 1).map(obj => obj.characters).value();
array push in _.forEach
var results = [] _.forEach(objs, obj => { if(obj.characters.level == 1) results.push(obj.characters) });
_.reduce
var results = _.reduce(objs, (results, obj) => { if(obj.characters.level == 1) results.push(obj.characters) return results },[]);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
_.filter + _.map
array push in _.forEach
_.reduce

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 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36

Browser/OS: Chrome 111 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
_.filter + _.map	1128250.0 Ops/sec
array push in _.forEach	4668690.0 Ops/sec
_.reduce	5050721.0 Ops/sec

_.filter + _.map vs array push in _.forEach vs _.reduce (version: 4)

_.filter + _.map vs array push in _.forEach

Comparing performance of: _.filter + _.map vs array push in _.forEach vs _.reduce

Created: 5 years ago by: Registered User

Jump to the latest result

_.filter + _.map

array push in _.forEach

_.reduce

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A