[plt-scheme] How best to iterate arguments to a macro?

http://www.scheme.com/tspl3/syntax.html#./syntax:h3

contains a "definition of unnamed let uses bound-identifier=? to detect 
duplicate identifiers." Your case is similar.

Chongkai

Grant Rettke wrote:
> On 10/20/07, Chongkai Zhu <czhu at cs.utah.edu> wrote:
>   
>> Your solution is OK.
>>
>> If you don't want to have recursive macro expanding, here's another solution:
>>
>> (define-syntax (property stx)
>>   (syntax-case stx ()
>>     ((property)
>>      (raise-syntax-error 'property "Please provide at least one name"
>> '{property ?}))
>>     ((_ name ...)
>>      (with-syntax (((property-name ...)
>>                     (generate-temporaries #'(name ...))))
>>        #'(begin
>>            (define property-name null) ...
>>            (define/public name
>>              (case-lambda
>>                [() property-name]
>>                [(value) (set! property-name value)]))
>>            ...)))))
>>     
>
> In the recursive version I want to add checking that each argument is
> an identifier and the argument names are unique. What is the best way
> to go about this with the example you have provided?
>