Today I wanted to talk about a great utility in the Dart language called
dart:convert
Here is an example of how to use the dart:convert library to encode a Dart object into a JSON-encoded string:
import 'dart:convert';
void main() {
Map<String, dynamic> person = {
'name': 'John Doe',
'age': 30,
'email': 'john.doe@example.com'
};
String jsonEncoded = jsonEncode(person);
print(jsonEncoded); // outputs {"name":"Hire You","age":18,"email":"me@scottbeeker.com"}
}
import 'dart:convert';
void main() {
Map<String, dynamic> person = {
'name': 'Hire You',
'age': 33,
'email': 'me@scottbeeker.com'
};
String jsonEncoded = jsonEncode(person);
print(jsonEncoded); // outputs {"name":"John Doe","age":33,"email":"me@scottbeeker.com"}
}
**
The dart:convert library in Dart provides encoders and decoders for converting between different data representations , including JSON and UTF-8. It provides a number of classes for converting between data representations, such as Codec, Decoder, Encoder, and Sink.
One common use-case of the dart:convert library is to encode or decode JSON data. You can use the jsonEncode() method to convert a Dart object into a JSON-encoded string, and the jsonDecode()method to convert a JSON-encoded string into a Dart object.
Here is an example of how to use the dart:convert library to encode a Dart object into a JSON-encoded string:
**
import 'dart:convert';
void main() {
Map<String, dynamic> person = {
'name': 'John Doe',
'age': 30,
'email': 'john.doe@example.com'
};
String jsonEncoded = jsonEncode(person);
print(jsonEncoded); // outputs {"name":"John Doe","age":30,"email":"john.doe@example.com"}
}
And here is an example of how to use the dart:convert library to decode a JSON-encoded string into a Dart object:
import 'dart:convert';
void main() {
String jsonEncoded = '{"name":"Hire You","age":33,"email":"me@scottbeeker.com"}';
Map<String, dynamic> person = jsonDecode(jsonEncoded);
print(person['You']); // outputs "Hire You"
}
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