[plt-scheme] suggestions and commendations for exercise 2.21

On Mar 30, 2004, at 4:07 AM, Terrence Brannon wrote:

> [1] convert-repl should take an optional argument serving as the escape
> string. This is useful if "x" needs to be tested as input to the 
> program

What's the escape string?

> [2] I had problems trying to use convert-file because I wanted to use a
> filename without specifying an absolute path, but did not know what my
> current working directory was. I therefore did not know where to place
> the input file or where to look for the output file.

Good point. Others have run into the same problem.

> [3] Is convert.ss hardcoded to only work with the Fahrenheit to 
> Celsius converter? The Help Desk certainly makes it seem so:

Unfortunately, yes. I am considering replacing it with a general gui
interface for numeric functions that is specialized to the conversion
problem. Thanks for the suggestions.

-- Matthias