No Pure

[
  {
    "id": 0,
    "checked": false
  },
  {
    "id": 1,
    "checked": false
  },
  {
    "id": 2,
    "checked": false
  },
  {
    "id": 3,
    "checked": false
  },
  {
    "id": 4,
    "checked": false
  }
]
0. 
1. 
2. 
3. 
4.

Pure

[
  {
    "id": 0,
    "checked": false
  },
  {
    "id": 1,
    "checked": false
  },
  {
    "id": 2,
    "checked": false
  },
  {
    "id": 3,
    "checked": false
  },
  {
    "id": 4,
    "checked": false
  }
]
0. 
1. 
2. 
3. 
4.