gistfile1.txt

extension ViewStore where State == SomeState, Action == SomeAction {
    
    var displayValue: String {
        // do a bunch of querying on viewStore
        return ""
    }
    
    func sendAction(with id: Int) -> Void {
        // create a
        if viewStore.isValid {
            send(SomeAction.(at: id, value: SomeAction.SubAction.foo))
        } else {
            // do nothing
        }
    }
}