How can I remove object from array, with Lodash?

Question

I'm trying to remove an object from an array using Lodash.

In server.js (using NodeJS):

    var lodash = require('lodash')();

    var rooms = [
      { channel: 'room-a', name: 'test' },
      { channel: 'room-b', name: 'test' } 
    ]

I tried with two commands and it did not work:

    var result = lodash.find(rooms, {channel: 'room-a', name:'test'});
    var result = lodash.pull(rooms, lodash.find(rooms, {channel: 'room-a', name:'test'}));

Here's the output of console.log(result):

    LodashWrapper {
      __wrapped__: undefined,
      __actions__: [ { func: [Function], args: [Object], thisArg: [Object] } ],
      __chain__: false,
      __index__: 0,
      __values__: undefined }

Can someone help me? Thank you!

I wanted to avoid fatigue :P

Fábio Zangirolami
– Fábio Zangirolami

2016-08-01 17:31:30 +00:00
Commented Aug 1, 2016 at 17:31 — Fábio Zangirolami
– Fábio Zangirolami, Commented Aug 1, 2016 at 17:31

Stanislav Ostapenko · Accepted Answer · 2016-08-09 20:53:53Z

20

_.remove() is a good option.

var rooms = [
  { channel: 'room-a', name: 'test' },
  { channel: 'room-b', name: 'test' } 
];

_.remove(rooms, {channel: 'room-b'});

console.log(rooms); //[{"channel": "room-a", "name": "test"}]

<script src="https://cdn.jsdelivr.net/lodash/4.14.2/lodash.min.js"></script>

edited Aug 9, 2016 at 20:53

answered Aug 9, 2016 at 20:34

Stanislav Ostapenko

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1 Comment

Bernardo Dal Corno Over a year ago

That wasn't clear in the docs! Was trying to combine with filter to no success

Adam Boduch · Accepted Answer · 2016-08-02 18:53:59Z

7

I'd go for reject() in this scenario. Less code:

var result = _.reject(rooms, { channel: 'room-a', name: 'test' });

answered Aug 2, 2016 at 18:53

Adam Boduch

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Comments

SLaks · Accepted Answer · 2016-08-01 17:25:21Z

3

require('lodash')()

Calling the lodash function (by ()) creates a LoDash object that wraps undefined.

That's not what you want; you want the lodash function itself, which contains static methods.

Remove that.

answered Aug 1, 2016 at 17:25

SLaks

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2 Comments

Fábio Zangirolami Over a year ago

uoooWoww impressive, I do not have much knowledge, but it was just a detail! so I thought well with my code, it worked like a charm! thankyou @SLaks !!!!

SLaks Over a year ago

For more details about LoDash wrapper objects (for chaining), see their docs.

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