OpenEuphoria

Re: Maybe not so stupid a question?

• Posted by Matt Lewis <matthewwalkerlewis at gmail.com> May 21, 2007
• 501 views

CChris wrote:
> 
> Euphoria is a pass by value language and has no pointer to allevuate the
> problem.
> 
> Hence, when you pass <dog> as an argument, only the value is passed, possibly
> as a pointer. But the target routine has no way to know where the value comes
> from. And variable names don't make it to the backend part of the interpreter
> anyway.
> 
> Since Matt's OOEu implements pass by reference, you should be able to code
> something like:
> 
> procedure test(byref object x)
> print(1,var_name(x))
> end procedure
> 
> test(dog) would then print "dog". If you pass an expression, I'd expect ""
> to be printed, or "_temp#01A" perhaps. But that is OOEu, not plain Euphoria.

Actually, to do this, you'd need to use the var_id() family of routines
in ooeu.  There's a different pass by reference functionality that does just
that, but doesn't allow additional access to any metadata.

Matt