A modern programming language that makes developers happier.

kotlinlang

Claiming koltin is so concise, wouldn’t an `if?`statement qualify. 
So that one can write `if?(state?.isValid)` instead of `if(state?.isValid == true)`
So when we have an if-statement of an nullable value we don’t have to explicitly declare the `== true` all the time.

`?` is null safety operator, it’s not clear how `if?` should work. I think it’s too implicit and dirty syntax imho. Also, what if I want to have `if(state?.isValid == false)` condition?

Good point Andrey.. didn’t think of the negation since I tend to never write code that way since it’s not as clear to read. But it’s a good point for general language feature.
Just so tired of writing explicit `== true`…

you can write extension property for particular usage `val StateHolder.isValidState get() = state?.isValid == true`