What is the difference between generate-temporaries and gensym? Robby
On Thu, Oct 1, 2009 at 3:11 PM, Sam TH <sa...@ccs.neu.edu> wrote: > On Thu, Oct 1, 2009 at 4:01 PM, Casey Klein > <clkl...@eecs.northwestern.edu> wrote: >> Can someone explain why this macro expands without error in a module >> but not in the REPL? >> >> (define-syntax (m stx) >> (syntax-case stx () >> [(_ x) >> (with-syntax ([(y) (generate-temporaries (syntax (x)))]) >> (syntax (define (y) y)))])) >> >>> (m q) >> compile: unbound identifier (and no #%top syntax transformer is bound) in: q1 > > This version of the macro works: > > (define-syntax (m stx) > (syntax-case stx () > [(_ x) > (with-syntax ([(y) (list (gensym (syntax-e #'x)))]) > (syntax (define (y) y)))])) > > -- > sam th > sa...@ccs.neu.edu > _________________________________________________ > For list-related administrative tasks: > http://list.cs.brown.edu/mailman/listinfo/plt-dev > _________________________________________________ For list-related administrative tasks: http://list.cs.brown.edu/mailman/listinfo/plt-dev
