OpenEuphoria

Re: Updating parameters in a procedure / function

• Posted by ZNorQ <znorq at holhaug.com> Jul 17, 2006
• 568 views

Juergen Luethje wrote:
> 
> ZNorQ wrote:
> 
> > Juergen Luethje wrote:
> >>
> >> Unfortunally, official RDS Euphoria can't pass parameters by reference.
> >> But Matt's OOEU (in the archieves) allows to do so.
> > 
> > I see, but would I experience any incompabilities by using his?
> 
> Most features of OOEU are compatible with RDS Euphoria. But there are
> some exceptions, including passing variables by reference to functions
> and procedures (for details please see the OOEU documentation).
> Using OOEU you can write e.g.:
> 
> <ooeucode>
> procedure swap (object *x, object *y)
>    object temp
>    temp = x
>    x = y
>    y = temp
> end procedure
> 
> integer a, b
> a = 1
> b = 4
> swap(a, b)
> ? a             -- prints 4
> ? b             -- prints 1
> </ooeucode>
> 
> But running the above code with RDS Euphoria, the first line will cause
> an error.
> 
> Regards,
>    Juergen
> 
> -- 
> Please excuse my flawed English. My native language is Euphoria.

Exactly what I wanted. I know there is forces that don't want pointers in
Euphoria (I'm really one of them), but I see that sometimes it come in
handy.

Now, I know this have been discussed before, so please don't start one
again, atleast not with this thread... :)

Kenneth