Flutter for Beginners

Named constructors

Unlike Java and many other languages, Dart does not have overloading by redefinition, so, to define alternative constructors for a class, you need to use the named constructors:

// ... class fields definition// other constructorsPerson.anonymous() {}

A named constructor is how you define alternative constructors for a class. In the preceding example, we defined an alternative constructor for a Person class without a name.

The only difference compared with a simple method is that constructors do not have a return statement, as the only thing they have to do is to initialize the object instance properly. We will see named constructors in action in the chapters on Flutter, as the framework uses these a lot to initialize ...