[racket-users] Problems with 'provide'

[David Storrs]

Hi folks,

I have a file, "util.rkt", the complete text of which is:

== QUOTE
#lang racket

(require racket/pretty)

(define (print-prettier s)
  (parameterize ([pretty-print-columns 1])
(pretty-print s)))

(define (hash-key-is? h k v)
  (and (hash-has-key? h k)
   (equal? (hash-ref h k) v)))

(provide (all-defined-out))
 /QUOTE

(Without the ===QUOTE stuff, obviously)

>From the same directory, I do this:

[dstorrs@localhost:~/scheme:<>]$ racket
racket
Welcome to Racket v6.3.
-> (require "./util.rkt")
(require "./util.rkt")
-> hash-key-is?
hash-key-is?
; hash-key-is?: undefined;
;  cannot reference undefined identifier
; [,bt for context]
-> (require "util.rkt")
(require "util.rkt")
-> hash-key-is?
hash-key-is?
; hash-key-is?: undefined;
;  cannot reference undefined identifier
; [,bt for context]


I've also tried changing the provide like to:  (provide print-prettier
hash-key-is?) but that changed nothing.

I've got another module which ends with a (provide (all-defined-out)) and
that one makes its functions available just fine.

What's going on?

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Re: [racket-users] Problems with 'provide'

[Robby Findler]

Is it possible you have two util.rkt files and you are in the wrong
directory?

Robby

On Wednesday, December 23, 2015, David Storrs 
wrote:

> Hi folks,
>
> I have a file, "util.rkt", the complete text of which is:
>
> == QUOTE
> #lang racket
>
> (require racket/pretty)
>
> (define (print-prettier s)
>   (parameterize ([pretty-print-columns 1])
> (pretty-print s)))
>
> (define (hash-key-is? h k v)
>   (and (hash-has-key? h k)
>(equal? (hash-ref h k) v)))
>
> (provide (all-defined-out))
>  /QUOTE
>
> (Without the ===QUOTE stuff, obviously)
>
> From the same directory, I do this:
>
> [dstorrs@localhost:~/scheme:<>]$ racket
> racket
> Welcome to Racket v6.3.
> -> (require "./util.rkt")
> (require "./util.rkt")
> -> hash-key-is?
> hash-key-is?
> ; hash-key-is?: undefined;
> ;  cannot reference undefined identifier
> ; [,bt for context]
> -> (require "util.rkt")
> (require "util.rkt")
> -> hash-key-is?
> hash-key-is?
> ; hash-key-is?: undefined;
> ;  cannot reference undefined identifier
> ; [,bt for context]
>
>
> I've also tried changing the provide like to:  (provide print-prettier
> hash-key-is?) but that changed nothing.
>
> I've got another module which ends with a (provide (all-defined-out)) and
> that one makes its functions available just fine.
>
> What's going on?
>
>
>
>
>
> --
> 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.
>

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