[plt-scheme] new to programming

From: Matthias Felleisen (matthias at ccs.neu.edu)
Date: Thu Jan 3 10:42:43 EST 2008

As far as my on-line search capabilities go, the problem doesn't  
mention the word "list" anywhere. The word also doesn't show up in  
the section that precedes the exercise. (If you believe there is a  
flaw in my Safari, would you please send me the sentence that  
contains the word "list" ? Thanks)

I assume you mean the part concerning convert-file. It asks you to  
create a file, say with Notepad or TextEdit (or even with DrScheme)  
or any other text editor that comes with your operating system (Mac,  
Windows, Linux). The file should look somewhat like this:

10 20     30
   22 212     43

(without dashes) and should have a name such as "in.dat" (without the  
quotes) and it should be in the same directory as your program.


  > (convert-file "in.dat" Fahrenheit->Celsius "out.dat")

will then respond with


(if it succeeds) and produce a file called "out.dat" with the above  
temperatures converted into Celsius:


(again, without the dashes).

-- Matthias

On Jan 3, 2008, at 12:48 AM, anesmike wrote:

> OK i am new to this and my question is : on page 10 of htdp ; there is
> a question concerning convert-repl which is a program that maps a
> fahrenheit to celcius program to a list of numbers.but the problem is
> there is instructions on creating a list of numbers. any help would be
> appreciated.
> thanks,mike
> I am going though this book on my own and thus not in a class  
> situation
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