OpenEuphoria

Re: Eu improvements (part 4)

• Posted by c.k.lester <euphoric at cklester.com> Jan 05, 2007
• 665 views

Karl Bochert wrote:
> cklester wrote:
> > Karl Bochert wrote:
> > > . The function add() really should do what it says - add a word to the
> > > list.
> > Then you'd want something like this:
> >     <a
> >     href="http://www.listfilter.com/cgi-bin/esearch.exu?fromMonth=6&fromYear=B&toMonth=8&toYear=B&postedBy=cklester&keywords=Updating+parameters+in+a+procedure+%2F+function">http://www.listfilter.com/cgi-bin/esearch.exu?fromMonth=6&fromYear=B&toMonth=8&toYear=B&postedBy=cklester&keywords=Updating+parameters+in+a+procedure+%2F+function</a>
> A very nicely presented workaround for the lack of PBR.
> Whats remarkable is the hoops you must jump through.
> Your example using this version of PBR:
> }}}
<eucode>
>     function list.addItem(object item)
>         append(list, item)
>     end function
>    function list.getItemIdx(object item)
>     -- PBR not needed for this fct, but what the heck
>         return find(item, list)
>     end function
> 
>     procedure main()
>         sequence myCars, myPhones, myGirlFriends
>         atom idx
>         myCars = {}  myPhones = {}  myGirlFriends = {}
> --? do I need these inits?  why?   how do I put them in addItem()?

It would work a little differently for OOP. You'd need something like the
following:

myCars = newObject("myCars") -- myCars previously defined as a holder of car
records
-- this is just an index to the internal list of
                             objects
auto = newObject("automobile") -- automobile previously defined as a record of
car data
-- this is just an index to the internal list of
                               objects
property(auto,"maker","Ford")

-- then to add the automobile to the myCars list/db:
addObject(myCars,auto) -- or somesuch

This is possible without any change to Euphoria right now. I bet some
current incarnation of a Euphoria OOP library does this exact thing.
Dot notation will be syntactic sugar, right? Not that there's anything
wrong with that. :)