[racket] realm of racket

Please work your way thru HtDP/2e first. Realm assumes people have seen a full course on programming (2e is almost complete) and have the maturity to work through some typical first problems. When you're done Realm will be just fine for you. -- Matthias





On Nov 3, 2013, at 6:19 AM, Saad Bashir wrote:

> But I have another question.  What should I do if need to go back to BSL from time to time as I am still working with Htdp/2.
> 
> Will you advise to go through Realm of Racket fully and then re-try Htdp/2?
> 
> Saad
> 
> 
> On Sun, Nov 3, 2013 at 2:14 PM, Geoffrey S. Knauth <geoff at knauth.org> wrote:
> Glad you got it working!
>  
>  
> On Sun, Nov 3, 2013, at 6:11, Saad Bashir wrote:
>> Thank you for your help. I reinstalled Racket and chose the correct language and the problems is solved.  
>>  
>> Great forum.
>>  
>> Saad
>>  
>>  
>> On Sun, Nov 3, 2013 at 1:50 PM, Saad Bashir <bashir.saad at gmail.com> wrote:
>> Thank you very much. 
>>  
>> I surmised as much but the problem is when I go to the language option in Racket and click on choose language, there is no option for Racket language. 
>>  
>> What should I do? 
>>  
>> Saad
>>  
>>  
>> On Sun, Nov 3, 2013 at 12:47 PM, Geoffrey S. Knauth <geoff at knauth.org> wrote:
>>  
>> 
>> Saad, at first I thought the problem was you put a space after the single-quote mark.  I tried what you entered using the Beginning Student with List Abbreviations language, and it worked, space or no space: 
>>  
>>  
>> > '((1 3 5 7 9) (2 4 6 8 0))
>> (list (list 1 3 5 7 9) (list 2 4 6 8 0))
>> > ' ((1 3 5 7 9) (2 4 6 8 0))
>> (list (list 1 3 5 7 9) (list 2 4 6 8 0))
>>  
>> Then I tried with the Beginning Student Language, and I got what you got:
>>  
>> '((1 3 5 7 9) (2 4 6 8 0))
>> quote: expected the name of the symbol after the quote, but found a part
>>  
>> Then I thought, "Better look at Realm of Racket."  On page 21, the page before page 22, it says that for the immediately following examples, you should pick "The Racket Language" (not Beginning Student Language). 
>>  
>> Geoff
>>  
>> On Sun, Nov 3, 2013, at 4:11, Saad Bashir wrote:
>>> I have been working with Htdp/2 as an absolute beginner and finding it difficult have switched to Realm of Racket.
>>>  
>>> In the first pages it asks one to download Racket which I already have but in the BSL mode.  When using it I type in the following in the interactions panel as advised by Realm of Racket to see about lists (page 22): 
>>>  
>>> ' ((1 3 5 7 9) (2 4 6 8 0))
>>>  
>>> the message I get is:
>>>  
>>> quote: expected the name of the symbol after the quote, but found a part
>>>  
>>> It does not return the list as it is supposed to in the book.
>>>  
>>> Is this because I am using BSL?  If so what should I do/
>>>  
>>> Thank you for any help.
>>>  
>>> Saad
>>> ____________________
>>>   Racket Users list:
>>>   http://lists.racket-lang.org/users
>>  
>> -- 
>> Geoffrey S. Knauth | http://knauth.org/gsk
>>  
>>  
>>  
>>  
>> ____________________
>>   Racket Users list:
>>   http://lists.racket-lang.org/users
>>  
>>  
>>  
>  
> -- 
> Geoffrey S. Knauth | http://knauth.org/gsk
>  
>  
> 
> ____________________
>  Racket Users list:
>  http://lists.racket-lang.org/users

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