What means the operator "??" in Dart/Flutter? - Stack Overflow
Nov 3, 2020 · What means the operator "??" in Dart/Flutter? [duplicate] Asked 5 years, 1 month ago Modified 5 years, 1 month ago Viewed 16k times
What are the ?? double question marks in Dart? - Stack Overflow
Jan 4, 2019 · The following line of code has two question marks: final myStringList = prefs.getStringList('my_string_list_key') ?? []; What is the meaning?
What's the meaning of “=>” (arrow) in Dart/Flutter?
Dec 17, 2020 · From the documentation: For functions that contain just one expression, you can use a shorthand syntax. The => expr syntax is a shorthand for { return expr; }. The => notation is …
constants - What is the difference between the "const" and "final ...
May 20, 2018 · Const: "const" has a meaning that's a bit more complex and subtle in Dart. const modifies values. You can use it when creating collections, like const [1, 2, 3], and when constructing …
In FLUTTER / DART, why do we sometimes add a question mark to …
Mar 29, 2021 · In FLUTTER / DART, why do we sometimes add a question mark to "String" when declaring a variable? Asked 4 years, 9 months ago Modified 2 years, 7 months ago Viewed 18k times
What do these symbols mean ??= in flutter - Stack Overflow
May 11, 2022 · What do these symbols mean ??= in flutter Asked 3 years, 2 months ago Modified 3 years, 2 months ago Viewed 1k times
What Is The Purpose of @override used in Flutter?
Jul 7, 2018 · 47 In the flutter documentation the keyword @override is used a lot in classes. I tried to search for the meaning but still can't understand. What is the purpose of this @override Keyword. …
flutter - What is a Future and how do I use it? - Stack Overflow
Jul 21, 2020 · In case you are familiar with Task<T> or Promise<T> and the async / await pattern, then you can skip right to the "How to use a Future with the widgets in Flutter" section. What is a Future …
What does "..." or ".." mean in flutter? - Stack Overflow
Jul 2, 2021 · While looking at some code written in flutter, I keep seeing "..." used in different situations, but do not really understand how and why it is used. Here is an example : CircleAvatar( ...
What is the caret sign (^) before the dependency version number in ...
Dec 1, 2018 · In the pubspec.yaml file of my Flutter project there is a caret (^) before the version number of some of the dependencies. dependencies: flutter: sdk: flutter cupertino_icons: ^0.1.2