Re: [racket-users] Differences running HtDP programs from DrRacket IDE vs racket command line

2020-10-06 Thread Nick Lee
Thanks again Robby! I will create issues on the drracket github issues page.

On Tuesday, October 6, 2020 at 9:23:49 AM UTC-4 Robby Findler wrote:

> On Tue, Oct 6, 2020 at 1:50 AM Nick Lee  wrote:
>
>> Thank you very much Robby for the quick reply! I should have mentioned 
>> that our students are using Beginning Student by setting the Language to 
>> that, rather than adding #lang htdp/bsl. 
>>
>
> Right, I got that. I merely meant to say that those are likely to be the 
> same bug.
>  
>
>> It appears this makes a difference. So the whole file looks like:
>>
>> ;; The first three lines of this file were inserted by DrRacket. They 
>> record metadata
>> ;; about the language level of this file in a form that our tools can 
>> easily process.
>> #reader(lib "htdp-beginner-reader.ss" "lang")((modname file) 
>> (read-case-sensitive #t) (teachpacks ()) (htdp-settings #(#t constructor 
>> repeating-decimal #f #t none #f () #f)))
>> (define (quasiquote x) x)
>> (define (f x) 123)
>> `(f 888)
>>
>> Running this file in command line with "racket file.rkt" doesn't show any 
>> errors for me. I'm using DrRacket 7.8 if it matters.
>>
>>
> Ah, oops. I had mistakenly tested with BSL+. I see this error too, now.
>
> Robby
>
>

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Re: [racket-users] Differences running HtDP programs from DrRacket IDE vs racket command line

2020-10-06 Thread Nick Lee
Thank you very much Robby for the quick reply! I should have mentioned that 
our students are using Beginning Student by setting the Language to that, 
rather than adding #lang htdp/bsl. It appears this makes a difference. So 
the whole file looks like:

;; The first three lines of this file were inserted by DrRacket. They 
record metadata
;; about the language level of this file in a form that our tools can 
easily process.
#reader(lib "htdp-beginner-reader.ss" "lang")((modname file) 
(read-case-sensitive #t) (teachpacks ()) (htdp-settings #(#t constructor 
repeating-decimal #f #t none #f () #f)))
(define (quasiquote x) x)
(define (f x) 123)
`(f 888)

Running this file in command line with "racket file.rkt" doesn't show any 
errors for me. I'm using DrRacket 7.8 if it matters.

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[racket-users] Differences running HtDP programs from DrRacket IDE vs racket command line

2020-10-05 Thread Nick Lee

Hello,
I noticed there are differences when I run HtDP programs in DrRacket IDE vs 
the "racket" command line.

For example, the following program's test passes in DrRacket IDE:

;; file.rkt - Set to Beginning Student
(check-expect (exact? (string->number "1.0")) true)

But when I run "raco test file.rkt", the test fails.

As another example, the follow Beginning Student program generates an error 
when run in DrRacket IDE (the error being read-syntax: illegal use of ```):

;; file.rkt - Set to Beginning Student
(define (quasiquote x) x)
(define (f x) 123)
`(f 888)

But when I run "racket file.rkt", no error is generated, and 123 is printed.

Is there a way I can run HtDP programs from the command-line and get 
behavior that's the same as when I click "Run" button in the IDE?

Thanks


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