how to filter null values from map in Dart

Question

Following the map, having both key-value pair as dynamic, Write a logic to filter all the null values from Map without us?

Is there any other approach than traversin

Answer 1

I did this to make it easy remove nulls from map and list using removeWhere: https://dartpad.dartlang.org/52902870f633da8959a39353e96fac25

Sample:

final data = 
  {
    "name": "Carolina Ratliff",
    "company": null,
    "phone": "+1 (919) 488-2302",
    "tags": [
      "commodo",
      null,
      "dolore",
    ],
    "friends": [
      {
        "id": 0,
        "name": null,
        "favorite_fruits": [
          'apple', null, null, 'pear'
        ]
      },
      {
        "id": 1,
        "name": "Pearl Calhoun"
      },
    ],
  };

void main() {
  // From map
  print('Remove nulls from map:\n' + data.removeNulls().toString());
  // From list
  print('\nRemove nulls from list:\n' + [data].removeNulls().toString());
}