What are constructors in Flutter?

It is option to declare within the class. All class have own constructor but if we don’t declare or forget then Dart compiler will create default constructor automatically by passing the default value to the member variable.

It is option to declare within the class. All class have own constructor but if we don’t declare or forget then Dart compiler will create default constructor automatically by passing the default value to the member variable.

You can only have one unnamed constructor, but you can have any number of additional named constructors in Flutter . By using named constructor you can create multiple constructors in the same class.

Constructor is a special method of Dart class which is automatically called when the object is created . The constructor is like a function with/without parameter but it doesn’t have a return type.16 Mar 2022

You can only have one unnamed constructor, but you can have any number of additional named constructors in Flutter . By using named constructor you can create multiple constructors in the same class.

Since a factory constructor does not directly create a new instance, it cannot use a constructor initializer list . A normal constructor always returns a new instance of the class. A factory constructor is permitted to return an existing instance, an instance of a derived class, or null .

There are three types of constructors in Dart: Thus, if a constructor which don’t have any parameter then it will be a type of default constructor.20 Tem 2020