LispForum

Hi all,

I'm writing in Common Lisp and I need a debugger; one which can allow me to step through each line of code and see what it is returning. Is there such a debugger?

Lispworks has a 'stepper' which lets you step though the execution of your code.

CL's trace and step facilities may also be useful.
http://www.lispworks.com/documentation/ ... tracec.htm
http://www.lispworks.com/documentation/ ... m_step.htm

Slime and its backends have implementations of single-step debugging.

I downloaded LispWorks, but I have to say the program doesn't seem to have a very intuitive design . I have no idea how to step through my code...Anyone know a step-by-step tutorial?

I don't know about a tutorial, but I found the following links helpful when I was recently looking for something similar.
SLDB: the SLIME debugger
SBCL Debugger

And a few chapters from Successful Lisp were informative:
How to Find Your Way Around, Part 1
How to Find Your Way Around, Part 2
How to Find Your Way Around, Part 3
Helpful Hints for Debugging and Bug-Proofing