keyword is used in the argument to make it optional for the constructor . All the optional arguments of a constructor should be placed after all the mandatory arguments only in a constructor.
Read moreCan you have a constructor with no parameters?
A constructor that takes no parameters is called a parameterless constructor . Parameterless constructors are invoked whenever an object is instantiated by using the new operator and no arguments are provided to new .
Read moreCan you have a constructor with no parameters?
A constructor that takes no parameters is called a parameterless constructor . Parameterless constructors are invoked whenever an object is instantiated by using the new operator and no arguments are provided to new .
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 moreCan we override default value of parameter?
Override Default Values. This is not allowed and results in a compiler error. Overriding functions cannot specify default values for their parameters . Kotlin requires that default values can only be specified in the base class functions.
Read moreHow many types of optional parameters are in flutter Dart?
Dart has two types of optional parameters: named and positional.
Read moreCan we give default value in function with optional positional parameter?
OptionalAttribute parameters do not require a default value .
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