Clojurians Log v2

Is this an idiomatic way to switch between different states of my app? I'm using cond with a keyword atom for each state.

[:main.inner.cover.flex-1 {:role "main"}                                                                                                          
     (let [state @app-state]                                                                                                                          
         (cond                                                                                                                                           
             (= :goal-input state) [goal-input the-goal app-state]                                                                                          
             (= :goal-timer state) [goal-timer the-goal]
             (= :goal-retro state) [:h1 "Goal Retro"]))]  

I would use case since all of the keywords are static.

Regarding the usage of the ratom itself - I think it's OK. But it's a very small case, it's hard to do something "bad" here.

Ah perfect, thank you. If I use case then I wouldn't need the let anymore to deref the atom right?

Yep. And all those =.

Nice. Thank you!

Ah, there's one difference between cond and case that may be important. With cond, if state is not equal to any of the keywords, the value will be nil. But with case, there will be an exception.

Ah okay. But I can provide a default as well, right? Also, are keywords the best way to represent these states? Is there a better way?

Yeah, but the default needs to be explicit. Just something to keep in mind. Well, it depends. Seems fine in this case.

Thanks! I appreciate the help

Yeah coming from c#/typescript it feels weird, but I don't know of a better way at this point