Use static variable in function()

Question

I would know if we can declare a static var in a function, as we can do in JavaScript.

When I callback my function, my variable keep her last affectation.

Or

Answer 1

You can't use static in a function.

Global variables in Dart are no code smell because they are only library global.
Global variables in JavaScript are ugly because they can conflict with global variables from 3rd-party libraries.
This doesn't happen in Dart.

As you can make a library in Dart as small as you want (for example only one variable) and you have something similar to a namespace for a library when you import it like

import 'my_globals.dart' as gl;

and then use it like

print(gl.myGlobalValue);

this is no code smell.

You could also create a class to simulate a namespace like

class MyGlobals {
  static myVal = 12345;
}

But library global variables are preferred in Dart instead of classes which contain only static variables or functions.