What is import in Dart?

Importing makes the components in a library available to the caller code . The import keyword is used to achieve the same. A dart file can have multiple import statements. Built in Dart library URIs use the dart: scheme to refer to a library.

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What is spread operator in Dart?

spread operator in Dart and how to use it. Since version 2.3, Dart adds a new operator called spread which uses three dots ( … ) notations. It can be used to extend the elements of a Collection . The examples below show the usage of the notation on List , Set , and Map .

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