A factory constructor is a constructor that can be used when you don’t necessarily want a constructor to create a new instance of your class . This might be useful if you hold instances of your class in memory and don’t want to create a new one each time (or if the operation of creating an instance is costly).
Read moreWhat is assert in flutter?
The assert statement is a useful tool to debug the code and it uses boolean condition for testing . If the boolean expression in assert statement is true then the code continues to execute, but if it returns false then the code ends with Assertion Error.20 Tem 2020
Read moreWhat is _internal () in Dart?
The _internal construction is just a name often given to constructors that are private to the class (the name is not required to be . _internal you can create a private constructor using any Class.20 Haz 2012
Read moreWhat is factory flutter?
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.
Read moreWhat is internal in flutter?
_Internal const internal. Used to annotate a declaration which should only be used from within the package in which it is declared, and which should not be exposed from said package’s public API . Tools, such as the analyzer, can provide feedback if.
Read moreWhy do we need a constructor in darts?
Most of us are familiar with the concept of constructors. They allow us to create different instances of our classes . We can specify which parameters the class should depend on when it is being instantiated and hide inner initialization logic.29 Mar 2021
Read moreWhat is a constructor in Dart?
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. A constructor is a function and hence can be parameterized.
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