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kotlinlang

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You forgot `is`. You're getting this because the `when` is trying to compare expression values, it's not checking against types. So it's trying to get you to create a value of type `Resources.Success` by calling its constructor

It depends on what you are doing. Your `when` branches can either check types or check values. You use `is` when you want to test whether the subject inside the `when` "is" of a certain type. If you don't use `is`, you're checking if the subject of the `when` is equal to the value in the branch.

When the expression in the branch is an `object`  (probably the case of `Resource.Loading`), then an `is` check is kinda the same as a value check, because there is only one value of this type

wow thats a lot, thanks. I will diff have to look more into it