[Gambas-user] "Groups" of optional arguments

[T Lee Davidson]

On 11/30/22 03:04, BB wrote:
> Maybe I'm overthinking this or maybe my brain is just not as sharp as it used to be.
> 
> Short explanation: I think I need to group optional arguments something along the lines of :
> 
> Sub XYZ ( arg1 As String, Optional ( arg2 As Boolean, arg3 As Integer = 0), Optional ( arg4 As Date = Null, arg5 as Integer = 
> -Inf ) )
> 
> The illogical thinking is that calls to the method
> 
>   * must have arg1 provided and
>   * either
>       o arg2 and possibly arg3
>   * or
>       o possibly arg4 and possibly arg5
> 
> The example is simpified, btw. 😁
> 
> Is there a way to do this?
> 
> 

This may be a gross misunderstanding of the problem. But, couldn't you pass in the callee's class as a required parameter in 
addition to the reqion, and pass all the optionals as variadic or, simply, positional optionals?

Ie.: given Sub XYZ ( arg1 As String, Optional ( arg2 As Boolean, arg3 As Integer = 0), Optional ( arg4 As Date = Null, arg5 as 
Integer = -Inf ) )

data = XYZ(regionid, Object.Type(Me), ...) , or
data = XYZ(regionid, Object.Type(Me), Optional arg3 as blah, Optional arg4 as blahblah, etc.)


and handle the myriad optional arguments based on who's calling? Or would that lead to more spaghetti code?


-- 
Lee