
Flutter for Beginners
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Variables are key to any programming language, holding application state so that the correct execution flow can be followed, displaying the correct information to the user, and interacting with other systems through defined data structures.
Unstructured data can be dangerous, though, and may lead to bugs and difficult-to-maintain code. Therefore, a rich set of data types is required in a modern programming language. Let's explore this area of the Dart language, starting with the basics of declaring a variable.
Variables store references to data and are key to decision making within your application. Variables have to be declared before they can be used.
A variable declaration follows many of the rules of similar programming languages, but due to type inference, Dart variable declaration can be looser.
The structure of a variable declaration is shown here:
type identifier = value;
type
defines the data type that...