The late keyword By declaring a non-nullable late variable , we promise that it will be non-null at runtime, and Dart helps us with some compile-time guarantees.
Read moreWhat is late modifier Dart?
the late modifier is part of the new null-safety by dart it’s used to tell the compiler to treat this variable as non-nullable and will be initialized later without it the compiler will treat the variable as nullable and give error. late String name; @override void initState() { super.
Read moreWhat is the use of constructor in Flutter?
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. Now you can create new object using a constructor.16 Mar 2022
Read moreWhat is Dart constructor?
Dart Constructors A constructor is a special function of the class that is responsible for initializing the variables of the class . Dart defines a constructor with the same name as that of the class.
Read moreHow do you use a Dart constructor?
Constructors in Dart: The constructors have the same name as the class name and don’t have any return type. In the above syntax: class_name is the name of the class whose constructor is being created. parameters are optional features and they can and can’t be defined for the constructor.20 Tem 2020
Read moreHow do you write a Dart constructor?
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.
Read moreWhat is flutter factory?
Save. Factory Method is referred as a creational design pattern which provides an interface for creating objects in a superclass, but allows subclasses to alter the type of objects that will be created . Also known as virtual constructors.
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