json_parsing_example.dart

import 'dart:convert';

void main() {
  final dynamic smth = jsonDecode('''
{
    "glossary": {
        "title": "example glossary",
        "GlossDiv": {
            "title": "S",
            "GlossList": {
                "GlossEntry": {
                    "ID": "SGML",
                    "SortAs": "SGML",
                    "GlossTerm": "Standard Generalized Markup Language",
                    "Acronym": "SGML",
                    "Abbrev": "ISO 8879:1986",
                    "GlossDef": {
                        "para": "A meta-markup language, used to create markup languages such as DocBook.",
                        "GlossSeeAlso": [
                            "GML",
                            "XML"
                        ]
                    },
                    "GlossSee": "markup"
                }
            }
        }
    },
    "GlossSeeAlso": [
        "GML",
        "XML"
    ]
}
''');

  // maps
  print(smth is Map<String, dynamic>);
  print(smth['glossary'] is Map<String, dynamic>);
  print(smth['glossary']['GlossDiv']['GlossList'] is Map<String, dynamic>);

  // lists
  print(smth['GlossSeeAlso'] is List<String>);
  print(smth['GlossSeeAlso'] is List<dynamic>);
}