Can parameters be optional?

The thing with optional parameters is, they are BAD because they are unintuitive – meaning they do NOT behave the way you would expect it. Here’s why: They break ABI compatibility ! so you can change the default-arguments at one place.

The value of an out argument will not be passed to the out parameter. A variable passed as an out argument need not be initialized. However, the out parameter must be assigned a value before the method returns. Compiler will not allow you to use out parameter as default parameter because it is violating its use case.

The value of an out argument will not be passed to the out parameter. A variable passed as an out argument need not be initialized. However, the out parameter must be assigned a value before the method returns. Compiler will not allow you to use out parameter as default parameter because it is violating its use case.

Dart has two types of optional parameters: named and positional.

Dart has two types of optional parameters: named and positional.

The default value will be null Uninitialized variables have an initial value of null.

The default value will be null Uninitialized variables have an initial value of null.