Do you need to use the "new" keyword in Dart?

Question

In my Dart based application I just noticed that I can omit the new keyword and everything works perfectly fine.

Instead of final widget = new Widget(); I can also use final widget = Widget();.

Does this have any effect in code?

Answer 1

No, it does not. With Dart 2 (click for the announcement with more information) the new and also const keywords were made optional.

This means that new Widget() does the exact same as Widget() on its own.

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The const keyword can, however, change a value that would not be a const implicitly to a const.
So you will have to explicitly specify const when needed.