Async, Mixins & the Flutter Toolchain. Future vs. Stream. Future<String> fetchName() async { final response = await http.get(url); return response.body; } Stream<int> countdown() async* { for (int i = 3; i > 0; i--) { yi…
ReadTypes, Null Safety, Classes & Collections. Variables & Null Safety. int count = 5; var name = "Ada"; // inferred as String String? nickname; // nullable — can hold null String description = nickname ?? "no nickname"; // …
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