In JavaScript, function parameters default to undefined .
Read moreHow many types of optional parameters are in Dart?
Dart has two types of optional parameters: named and positional. Before I discuss the differences, let me first discuss the similarities. Dart’s optional parameters are optional in that the caller isn’t required to specify a value for the parameter when calling the function.
Read moreHow many types of optional parameters are in flutter Dart?
Dart has two types of optional parameters: named and positional.
Read moreWhat are named parameters flutter?
Named parameters Named means that when you call a function, you attach the argument to a label . Calling that function would look like this: debugger(message: ‘A bug!18 Tem 2020
Read moreWhat are named parameters flutter?
Named parameters Named means that when you call a function, you attach the argument to a label . Calling that function would look like this: debugger(message: ‘A bug!18 Tem 2020
Read moreWhat is the difference between required and @required Flutter?
If you truly think this variable can be null then you would change the type by adding a ? after it so that the required keyword is not needed, or you can add a default value to the parameter. The @required annotation marks named arguments that must be passed; if not, the analyzer reports a hint.
Read moreWhy do we create constructors 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
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