Remove multiple objects in an array using Ramda

Question

is there a way in ramda to remove multiple object in ramda.

Here's my array

const availableFeatures = [
  {
    id: 1,
    name: "TEST 1",
  },
  {
    id: 2,
    name: "TEST 2",
  },
  {
    id: 3,
    name: "TEST 3"
  }
]

I want to remove the object that contains id 1 and 2.

is this a special case where you cannot use normal javascript filter? — wakakak
– wakakak, Commented Jan 23, 2020 at 3:13

customcommander · Accepted Answer · 2020-01-23 06:35:37Z

1

I like using where to build predicates:

const x = reject(where({id: flip(includes)([1, 2])}))

console.log(x(availableFeatures));

<script src="https://cdnjs.cloudflare.com/ajax/libs/ramda/0.26.1/ramda.min.js"></script>
<script>const {reject, where, flip, includes} = R;</script>
<script>
const availableFeatures =
  [ { id: 1
    , name: "TEST 1"
    },
    { id: 2
    , name: "TEST 2",
    },
    { id: 3
    , name: "TEST 3"
    }
  ];
</script>

answered Jan 23, 2020 at 6:35

customcommander

19.3k6 gold badges70 silver badges96 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Nick Parsons · Accepted Answer · 2020-01-23 03:25:29Z

0

Using R.reject() with R.propSatisfies() can allow you to remove all those objects in your array where the object's id is <= to 2 like so:

const availableFeatures = [ { id: 1, name: "TEST 1", }, { id: 2, name: "TEST 2", }, { id: 3, name: "TEST 3" } ];

const res = R.reject(R.propSatisfies(R.gte(2), 'id'))(availableFeatures);
console.log(res);

<script src="https://cdnjs.cloudflare.com/ajax/libs/ramda/0.26.1/ramda.js" integrity="sha256-xB25ljGZ7K2VXnq087unEnoVhvTosWWtqXB4tAtZmHU=" crossorigin="anonymous"></script>

answered Jan 23, 2020 at 3:25

Nick Parsons

51.7k6 gold badges61 silver badges80 bronze badges

Comments

Robby Cornelissen · Accepted Answer · 2020-01-23 03:34:07Z

0

You can use reject():

const availableFeatures = [
  {
    id: 1,
    name: "TEST 1",
  },
  {
    id: 2,
    name: "TEST 2",
  },
  {
    id: 3,
    name: "TEST 3"
  }
];

const result = R.reject(({id}) => id === 1 || id === 2, availableFeatures);

console.log(result);

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

edited Jan 23, 2020 at 3:34

answered Jan 23, 2020 at 3:27

Robby Cornelissen

98.6k23 gold badges154 silver badges180 bronze badges

Comments

Sachintha Nayanajith · Accepted Answer · 2020-01-23 04:26:36Z

0

You can use this solution

const availableFeatures = [
  {
    id: 1,
    name: "TEST 1",
  },
  {
    id: 2,
    name: "TEST 2",
  },
  {
    id: 3,
    name: "TEST 3"
  }
]

const result = R.reject(
    R.anyPass([
        R.propEq('id', 1),
        R.propEq('id', 2)
    ])
)(availableFeatures);

console.log(result);

<script src="https://cdnjs.cloudflare.com/ajax/libs/ramda/0.26.1/ramda.js" integrity="sha256-xB25ljGZ7K2VXnq087unEnoVhvTosWWtqXB4tAtZmHU=" crossorigin="anonymous"></script>

answered Jan 23, 2020 at 4:26

Sachintha Nayanajith

7315 silver badges12 bronze badges

Comments

Hitmands · Accepted Answer · 2020-01-23 08:09:12Z

0

also something like this would do:

const blacklist = R.propSatisfies(
  R.includes(R.__, [1, 2]), 
  'id',
);

const fn = R.reject(blacklist);

// ----

const data = [
  {
    id: 1,
    name: "TEST 1",
  },
  {
    id: 2,
    name: "TEST 2",
  },
  {
    id: 3,
    name: "TEST 3"
  }
];

console.log(fn(data));

<script src="https://cdnjs.cloudflare.com/ajax/libs/ramda/0.26.1/ramda.js" integrity="sha256-xB25ljGZ7K2VXnq087unEnoVhvTosWWtqXB4tAtZmHU=" crossorigin="anonymous"></script>

answered Jan 23, 2020 at 8:09

Hitmands

14.2k4 gold badges41 silver badges78 bronze badges

Collectives™ on Stack Overflow

Remove multiple objects in an array using Ramda

5 Answers 5

Comments

Comments

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

5 Answers 5

Comments

Comments

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related