Actually I think interfaces are discussed in Chapter 2, when you write "packages".
What bugged me more about that part is, that no code is given for running solutions to the exercises. I know there is a "framework" online somewhere, written in Racket, but it would be nice to have it in Scheme instead, in a very large part portable to many Scheme dialects.
What bugged me more about that part is, that no code is given for running solutions to the exercises. I know there is a "framework" online somewhere, written in Racket, but it would be nice to have it in Scheme instead, in a very large part portable to many Scheme dialects.