檢視 Dart 的原始碼

'''Dart'''是一個程式語言。

== 安裝 ==

<syntaxhighlight lang="bash">
wget -qO- https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo gpg  --dearmor -o /usr/share/keyrings/dart.gpg; echo 'deb [signed-by=/usr/share/keyrings/dart.gpg arch=amd64] https://storage.googleapis.com/download.dartlang.org/linux/debian stable main' | sudo tee /etc/apt/sources.list.d/dart_stable.list; sudo apt update; sudo apt install -y dart; sudo apt clean
</syntaxhighlight>

== 範例 ==

先初始化目錄：

<syntaxhighlight lang="bash">
dart create foo
</syntaxhighlight>

然後進到<code>foo/</code>裡面把[[Git]]環境先弄起來，並且把預設產生出來的初始環境先包進去：

<syntaxhighlight lang="bash">
cd foo; git init .; git add .; git commit -av -m 'Init by "dart create foo".'
</syntaxhighlight>

然後就可以執行測試：

<syntaxhighlight lang="bash">
dart run
</syntaxhighlight>

接著就可以開始修改了，這邊是先在<code>pubspec.yaml</code>裡面加上<code>http</code>：

<syntaxhighlight lang="yaml">
dependencies:
  http: ^1.2.1
</syntaxhighlight>

然後就可以更新：

<syntaxhighlight lang="bash">
dart pub get
</syntaxhighlight>

然後改<code>bin/foo.dart</code>：

<syntaxhighlight lang="dart">
import 'package:http/http.dart' as http;

void main(List<String> arguments) async {
  var url = Uri.https('www.google.com', 'robots.txt');
  var response = await http.get(url);
  print('Response status: ${response.statusCode}');
  print('Response body: ${response.body}');
}
</syntaxhighlight>

== 相關連結 ==

* [[Flutter]]

== 外部連結 ==

* {{Official|https://dart.dev/}} {{en}}
* [https://dart.dev/language Introduction to Dart] {{en}}
* [https://dart.dev/codelabs/dart-cheatsheet Dart cheatsheet codelab] {{en}}

[[Category:程式語言]]