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| import 'dart:async'; | |
| import 'dart:convert'; | |
| import 'package:http/http.dart' as http; | |
| Stream<Iterable<Map<String, dynamic>?>?> fetchGitHubRepos(String? url) async* { | |
| while (url != null) { | |
| print("$url"); | |
| final response = await http.get(Uri.parse(url)); | |
| if (response.statusCode == 200) { | |
| yield (jsonDecode(response.body) as List?)?.map((it) => it as Map<String, dynamic>?); | |
| final linkHeader = response.headers['link']; | |
| url = linkHeader != null | |
| ? RegExp(r'<([^>]+)>;\s*rel="next"').firstMatch(linkHeader)?.group(1) | |
| : null; | |
| } else { | |
| throw Exception('Failed to load repos'); | |
| } | |
| } | |
| } | |
| void main() async { | |
| final url = 'https://api.github.com/users/yongjhih/repos'; | |
| final stream = fetchGitHubRepos(url) | |
| .asyncExpand((it) => Stream.fromIterable(it ?? <Map<String, dynamic>?>[])) | |
| .take(3); | |
| await for (final repo in stream) { | |
| print(repo?['name'] ?? ""); | |
| } | |
| } |
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