jsonext

Description:

jsonext

Jsonext #
Dart JSON manipulation library with type safety, error-handling, and expressive
extensions for seamless data handling.
Features #

Generic Type for JSON: Introduces the Json<T> type, allowing strong
typing for JSON objects.
Callback Signature for JSON Parsing: Defines a callback signature,
FromJsonCallback<T>, for creating custom parsers.
Extension Methods: Offers a set of concise extension methods for common
data types like integers, strings, booleans, date-time, doubles, maps, lists,
and custom JSON structures.
Parsing with Custom Callback: Versatile method, parseN, for parsing JSON
values using a custom callback with optional fallback.
Check for Key Existence: The has method allows checking for the
existence of a specific key in the JSON object.

Usage #
Explore the provided extension methods to streamline your JSON parsing. Here's a quick example:
import 'package:jsonext/jsonext.dart';

void main() {
const data = {
'name': 'John Doe',
'age': 30,
'isStudent': false,
'birthDate': '1992-05-15',
'height': 5.9,
'grades': [90, 85, 78],
'contact': {
'email': '[email protected]',
'phone': '123-456-7890',
},
};

final name = data.asString('name', fallback: 'Unknown');
print('Name: $name');

final age = data.asIntN('age');
print('Age: $age');

final isStudent = data.asBool('isStudent', fallback: true);
print('Is Student: $isStudent');

final birthDate = data.asDateTime('birthDate', fallback: DateTime.now());
print('Birth Date: $birthDate');

final height = data.asDoubleN('height');
print('Height: $height');

final grades = data.asList('grades', fallback: []);
print('Grades: $grades');

final contact = data.asJson('contact', fallback: {});
print('Contact: $contact');

final hasEmail = contact.has('email');
print('Has Email: $hasEmail');

final contactObj = json.parseN(
'contact',
Contact.fromJson,
fallback: null,
);
print(contactObj);

const jsonString = "{ 'name': 'John Doe', 'age': 30, 'isStudent': false, }";
final decodedJson = jsonString.decode;
print(decodedJson);
}
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