Re: [Chicken-users] Re: Stupid backquote/unquote question

[felix winkelmann]

On Thu, Feb 21, 2008 at 4:39 PM, Hans Nowak <address@hidden> wrote:
>
>  I guess I'll have to use eval, but I don't think it's going to work if I use
>  this kind of s-expr inside a function?  Like
>
>    (define (blah x)
>      (sasm (jmp ,x)))
>
>  (where SASM is the name of the macro that handles this kind of 
> s-expressions).
>

This should work:

#;1> (define-macro (foo x) (list 'quasiquote x))
#;2> (foo 33)
33
#;3> (foo (3 + 4 is ,(+ 3 4)))
(3 + 4 is 7)
#;4>

You macro can for example expand into a call to a function
that does the actual processing of the (implicitly) quasiquoted
argument.


cheers,
felix