How to assign value to obs in flutter getx

Question

The below code working fine so far,

class Controller extends GetxController{
  var count = 0.obs;
  increment() => count++;
}

But when I assign a value it doesn't work as expected not event with type cast.

class Controller extends GetxController{
  var count = 0.obs;
  reset() => count = 10;
}

I would like to know how to assign value ( with '=' ) in get x obs objects?

Answer 1

This answer has been changed after I have been notified that I was wrong. I want to say thanks to Ivo Beckers to pointing put my misunderstanding of how RxInt works. Please upvote his answer.

0.obs returns the type RxInt. When you call ++ on this object, it is calling the + operator on the RxInt object with 1 to increment the value. It should be noted that the + and - operators for RxInt does manipulate the object itself and does therefore not behave like e.g. int which is immutable and does therefore require the return of a new object from the operation.

When you do count = 10 you are actually saying you want count to be overwritten with 10 which are of the type int and not RxInt.

What you want is more likely to be the following to you can report back to any subscribers that the value have been reset to 10:

class Controller extends GetxController{
  var count = 0.obs;
  reset() => count.value = 10;
}