still struggling with - 
```
import tables, future

type
  Action*[T, T1] = proc(value: T, state: T1): T1 {.noSideEffect, gcsafe, locks: 0.}
  
  ActionKinds {.pure.} = enum
    CountUp
  
  State = object
    count: int

proc app*[T, T1](state: T1, actions: Table[int, Action[T, T1]]) =
  echo "foo"
  
let state = State(count: 0)

discard app[int, State](state, {0: (value: int, state: State) => State(count: state.count + value)}.toTable)
```