Is there a way to check if an integer is a valid routine_id?

Programming OpenEuphoria
1

I’ve been playing with types and I’d like to create a type for a routine_id. Something like

type rid(integer id)
    return id >= 0 and 
        some_function_to_check_if_it_points_to_a_routine(id)
end type

Does such a thing exist?

2

Best to ask @petelomax or @ghaberek about that. Or ask on the forum.

3

The manual doesn’t appear to have any validation function like an is_routine_id(). Something to talk to Greg about. Greg’s not accessible within the Exercism messaging system for some reason so you’ll have to reach him via github

4

Not in general, no. My own Phix docs have this to say about user defined types. Storing them as say {“rid”,id} may help but would be more awkward to use, then again not difficult to pen a small collection of mini-shims such as call_tfunc(), call_tproc(), etc.

Aside: I might be able to cobble something together for Phix but I don’t know of any way in Euphoria to get my grubby mitts on low-level details such as the compiler’s symbol table.