No, The Computer Music Tutorial doesn't have any code as far as I remember. I know there is a second edition but not sure what is new in there.

The Csound book is so great though. It would be nice if the orc/sco on the CD that came with it were available. I have the book still but the CD is long gone and so is owning a CD rom drive.

I just came back to csound recently and I think it has taken me about 25 years to actually like the sco. If one is use to a piano roll/DAW, the sco seems utterly ridiculous.

The csound manual now though actually has good working examples too. If I remember, that was not the case when the csound book came out and part of what made it so great too.