Hi folks,
Had a false start a few months ago with my outdated Lisp-in-a-box on a mac but picked up a cheap as chips Thinkpad and thanks to a very helpul fellow on youTube got emacs,SBCL,Slime installed ok.
Working slowly through the above mentioned book and i'm already stuck on page 23
CL-USER> (defun prompt-read (prompt)
(format *query-io* "~a: " prompt)
(force-output *query-io*)
(read-line *query-io))
;
; caught WARNING:
; undefined variable: *QUERY-IO
;
; compilation unit finished
; Undefined variable:
; *QUERY-IO
; caught 1 WARNING condition
STYLE-WARNING: redefining COMMON-LISP-USER::PROMPT-READ in DEFUN
What does this all mean? it does return PROMPT-READ after all ?
Thanks in advance
milky
Practical Common Lisp
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Please respect your teacher's guidelines. Homework is a learning tool. If we just post answers, we aren't actually helping. When you post questions, be sure to show what you have tried or what you don't understand.
Please respect your teacher's guidelines. Homework is a learning tool. If we just post answers, we aren't actually helping. When you post questions, be sure to show what you have tried or what you don't understand.
Re: Practical Common Lisp
*query-io* is global variable. The asterisks are part of the variable name, they are just like any other characters. There is missing one in the last line of source code.
cl-2dsyntax is my attempt to create a Python-like reader. My mirror of CLHS (and the dark themed version). Temporary mirrors of aferomentioned: CLHS and a dark version.