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Flutter for Beginners
book

Flutter for Beginners

by Alessandro Biessek
September 2019
Beginner
512 pages
12h 52m
English
Packt Publishing
Content preview from Flutter for Beginners

Type inference – bringing dynamism to the show

In the previous examples, we demonstrated two ways of declaring variables: by using the type of the variable, such as int and String, or by using the var keyword.

So, now you may be wondering how Dart knows what type of variable it is if you don't specify it in a declaration.

From the Dart documentation (https://dart.dev/guides/language/effective-dart/documentation), consider the following statement:

"The analyzer can infer types for fields, methods, local variables, and most generic type arguments. When the analyzer doesn't have enough information to infer a specific type, it uses the dynamic type."

This means that, when you declare a variable, the Dart analyzer will infer the type based ...

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Publisher Resources

ISBN: 9781788996082