I am currently struggling with a common (Android) ...

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[Michael Marth]

I am currently struggling with a common (Android) problem: Passing the text from two EditTexts into my ViewModel and in case both have valid input, passing the info and side effect of enabling a button.
With Rx this was classical combineLatest. I am now wondering if I can get around nullable `var`s with partial application (which brings me to nullable function `var`s) or the Reader or State monad.
Any ideas / opinions?