Dart named parameter syntax

For the following code:

void debugger(String message, int lineNum) {// ...}

Two parameters must be provided when calling:

debugger('A bug!', 55)span>;

If the parameter is changed to a named parameter, the parameter becomes optional:

void debugger({String message, int lineNum}) {// ...}

Call:

debugger(message: 'A bug!', lineNum: 44);

Class constructor parameters can also use this syntax.

If a function has a lot of parameters, say 10, using the positional parameter syntax, it is very troublesome to have to remember which parameters are in what positions, but since named parameters use names, the order of the parameters' position becomes irrelevant, soavoids this problem.

https://flutterbyexample.com/lesson/function-arguments-default-optional-named