Thanks. Your answer clarifies my brain. Jos _____
From: racket-users@googlegroups.com [mailto:racket-users@googlegroups.com] On Behalf Of Alexander D. Knauth Sent: sábado, 23 de mayo de 2015 20:06 To: Jos Koot Cc: Racket-Users List Subject: Re: [racket-users] racket versus racket/base It sounds to me like you're understanding this perfectly. racket provides all of racket/base for-syntax. On May 23, 2015, at 1:52 PM, Jos Koot <jos.k...@gmail.com> wrote: This works: #lang racket (define-syntax (x y) (syntax-case y () (_ (syntax (quote monkey))))) x ; -> monkey This does not work #lang racket/base (define-syntax (x y) (syntax-case y () (_ (syntax (quote monkey))))) gives the expansion time error: syntax-case: unbound identifier in the transformer environment; also, no #%app syntax transformer is bound in: syntax-case This does work: #lang racket/base (require (for-syntax (only-in racket/base syntax syntax-case))) (define-syntax (x y) (syntax-case y () (_ (syntax (quote monkey))))) x ; -> monkey And this works too: #lang racket/base (syntax-case #'x () #''monkey) -> monkey This puzzles me. Both syntax-case and syntax are provided by both racket/base and racket. It is as though racket provides syntax and syntax-case for syntax too and that syntax/base does not. Probably I am misunderstanding things, but what? Thanks, Jos -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
