[plt-scheme] from biginning schemer

Try open ...plt/doc/reference/index.html and such files. -- Matthias




On Nov 16, 2007, at 1:55 PM, Geoff Knauth wrote:

> On Nov 13, 2007, at 23:01, Владимир Кашин wrote:
>> I am beginning schemer. I install DrScheme v.371. All right. I  
>> know lambda calculus, lazy and another. I have 2 simple questions:
>> 1. how to use *.ss files from collections folder ?
>> 2. how to use ODBC in my learn ?
>
> ( Добрый вечер и добро пожаловать,  
> Владимир!  Здесь в Пеннсильвании  
> падает лёгкий снег. )
>
> Here's a hacked-up excerpt from some of my recent code, adapted  
> from David Van Horn's Riverbot [1] code.
>
>   (require (lib "string.ss") ;; for `eval-string'
>            (lib "etc.ss")    ;; for `evcase' syntax
>            ; (lib "date.ss")
>            ; (all-except (lib "date.ss") date->string)
>            (lib "match.ss")
>            (lib "pretty.ss")
>            (lib "list.ss" "srfi" "1")
>            ; (lib "time.ss" "srfi" "19")
>            (prefix srfi:19: (lib "19.ss" "srfi"))
>            (all-except (lib "13.ss" "srfi") string-upcase string- 
> downcase string-titlecase)
>            "db-connection.ss"
>            (prefix mysql- (lib "mysqlclient.ss" "mysqlclient")))
>
> I was hoping to give you a pointer to the right page in Help Desk  
> explaining all of the options for require, but the state of my  
> documentation is in flux since I'm using the experimental v3.99 and  
> the Refresh All Manuals link isn't working today. [2]
>
> The syntax in DrScheme v4 will get simpler.  See Matthew Flatt's  
> post:  http://tinyurl.com/2kutmz
> [ http://groups.google.com/group/plt-scheme/browse_thread/thread/ 
> 51a5c484381edfe0#464e2e10ba3fcfa9 ]
>
> There are PostgreSQL and SQLite interfaces to DrScheme at PLaneT  
> ( http://planet.plt-scheme.org/ ).  I love PostgreSQL, but I needed  
> MySQL because that's all one of my ISPs had, which led me to DVH's  
> code.  I don't know about ODBC connectivity from Scheme.
>
> Geoffrey
> --
> Geoffrey S. Knauth | http://knauth.org/gsk
>
> [1] http://natalie.cems.uvm.edu:23235/about.html
>
> [2] PLT gurus:  v3.99 Refresh All Manuals did this:
>
> Error Evaluating Scheme Code
>
> ((dynamic-require (quote (lib "refresh-manuals.ss" "help")) (quote  
> refresh-manuals)))
>
> compile: bad syntax; function application is not allowed, because  
> no #%app syntax transformer is bound in: ((dynamic-require (quote  
> (lib "refresh-manuals.ss" "help")) (quote refresh-manuals)))
>
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