Using the triple-shift (>>>) operator in Dart

user_3681880 0
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Supposedly Dart 2.14 included the triple shift operator (>>>), but when I try to use it I get an error:

print(0xff >>> 1);

The compiler highlights the last > of the three and says:

Expected an identifier.

This is true on my local machine and in DartPad. Both are using the version of Dart 2.14 shipped with Flutter 2.5.

Am I doing something wrong or is this a problem with the release?

dart flutter bit-shift
2 Answers

You can refer to my related answer here.

Any language features that are introduced in a given version require that version as the minimum constraint for your project. This means you need to update your pubspec.yaml:

environment:
  sdk: '>=2.14.0 <3.0.0'

Now, you can use:

var foo = 42;
foo >>> 2;
user_65097510

If you compile this code, required Dart SDK version 2.14.1.

Dart language site’s documentation and examples use version 2.13.4 of the Dart SDK. https://dart.dev/tools/sdk.

So when you are trying with Flutter, It uses SDK version less than 2.14.1.

Download the latest Flutter SDK https://flutter.dev/docs/get-started/install/windows and replace the old one. Update your pubspec.yaml file

environment:
  sdk: ">=2.14.0 <3.0.0"

To run your code without Flutter app:

Download latest Dart SDK from https://dart.dev/tools/sdk/archive

  • Create a project with Android Studio IDE.

  • Create a new Flutter project. Select Dart from the left menu.

  • Locate Dart SDK path, that you downloaded(Must be extracted)

  • Provide your project name and location.

  • Create a Dart file and write these lines of code.

      void main() {
    final value = 0x22;
    print("Current value : $value");
    print("Unsigned shift right value is : ${(value >>> 4)}");
  }

    Output is

      F:/Dart/dart-sdk/bin/dart.exe --enable-asserts F:\Flutter\TestDartLanguage\main.dart
  Current value : 34
  Unsigned shift right value is : 2

  Process finished with exit code 0

Enjoy happy coding. Thanks

user_30186270
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