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RxDart

RxDart
Good example app - for flutter in general as well as RxDart

Json Deserialising

Any real-world app will likely need to convert Json to native objects.
The dart:convert package will convert Json to a Map (example adapter from discussion here):

import 'dart:convert';

String jsonString = '''
{
    "key1": "hello",
  "key2": "world",
  "key3": [1, 2, 3, 4],
  "key4": {
    "Age": 1,
    "Name": "Fish",
    "Address": {
        "House Number": 20,
        "Street": "Acacia Avenue"
    }
  }
}
''';

void main() {
  JsonCodec codec = new JsonCodec();
  Map<String, dynamic> decoded = codec.decode(jsonString);
  for (String key in decoded.keys) {
    print("Key $key contains: ${decoded[key]}");
  }
}

Which outputs:

Key key1 contains: hello
Key key2 contains: world
Key key3 contains: [1, 2, 3, 4]
Key key4 contains: {Age: 1, Name: Fish, Address: {House Number: 20, Street: Acacia Avenue}}

In order for that to be a usable approach you'd need to attempt writing a generic converter based on supplied objects/field types, or painfully write a fromJson builder for each type.

Alternatively there's dson which is implemented in a similar way to gson, it's also under active development - read the fromJson documentation.

Google have a library called Built Value see SO answer here, and a useful blog

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