Remove duplicates from Json response flutter - flutter

Question

i am unable to remove duplicates in Json. In below Json if title field has same values, i need to remove the duplicate node. IN below json title named "car" was repeated 3 times and i need to remove duplicates based on title field. I followed below stackoverflow links but not solved my problem.
Remove duplicate value in dart
Actual Json:
{
"totalSize": 6,
"done": true,
"records": [{
"attributes": {
"type": "ContentVersion",
"url": "https://sampleUrl"
},
"Id": "123456",
"Title": "car",
"Team_Category__c": "Vehicle"
},
{
"attributes": {
"type": "ContentVersion",
"url": "https://sampleUrl"
},
"Id": "123456",
"Title": "car",
"Team_Category__c": "Vehicle"
},
{
"attributes": {
"type": "ContentVersion",
"url": "https://sampleUrl"
},
"Id": "123456",
"Title": "cycle",
"Team_Category__c": "Vehicle"
},
{
"attributes": {
"type": "ContentVersion",
"url": "https://sampleUrl"
},
"Id": "123456",
"Title": "aeroplane",
"Team_Category__c": "Vehicle"
},
{
"attributes": {
"type": "ContentVersion",
"url": "https://sampleUrl"
},
"Id": "123456",
"Title": "car",
"Team_Category__c": "Vehicle"
}
]
}

Answer 1

Add kt_dart: to your pubspec.
Then import it in your dart file import 'package:kt_dart/kt.dart';
Then:
var json = jsonDecode(yourJsonAsString);
var records = mutableListFrom(json["records"]);
var distinct = records.distinctBy((it) => it["Title"]);

Answer 2

if nothing works out, you can create new similar structure and add only distinct items into it as below. I am not a dart programmer but it is a naive solution.
import 'dart:convert';
void main() {
var jsonData = '[{ "name" : "Dane", "alias" : "FilledStacks" },{ "name" : "Dane", "alias" : "FilledStacks" }]';
List uniqueList = new List();
List parsedJson = json.decode(jsonData);
for (var jsonElement in parsedJson) {
bool isPresent = false;
for (var uniqueEle in uniqueList) {
if (uniqueEle['name'] == jsonElement['name']) isPresent = true;
}
if (!isPresent) uniqueList.add(jsonElement);
}
print('$uniqueList');
print('');
print('${parsedJson.runtimeType} : $parsedJson');
}