Dart language support async/await programming style, or similar? [duplicate]

问题

This question already has an answer here:

Async/Await feature in Dart 1.8 (1 answer)

Closed 5 years ago.

It is possible write similar code in Dart language?

int i;
try {
  i = await getResultAsync();
} catch(exception) {
  // Do something
}

回答1:

Basic support is already available.
See https://www.dartlang.org/articles/await-async/ for more details.

main() async {
  print(await foo());
  try {
    print(await fooThrows());
  } catch(e) {
    print(e);
  }
}

foo() async => 42;

fooThrows() async => throw 'Anything';

回答2:

Not for now. See issue Support for "await" in Dart.

来源：https://stackoverflow.com/questions/17490888/dart-language-support-async-await-programming-style-or-similar