How do you send a function as a parameter in darts?

Navigating between the various routes(ie, pages) of an application in Flutter is done with the use of Navigator. The Navigator uses a common identifier to transition between routes. One can pass arguments to these routes using the arguments parameter of Navigator .

Dart function as parameter A Dart function can be passed to other functions as a parameter. Such a function is called a higher-order function. In the example, the apply function takes the inc and dec functions as parameters. We specify that the second parameter is a function type.

Dart: How to pass a function into a function (using a Function as a method parameter)