In Chapter 3 of "Practical Common Lisp," we are asked to create a CD database by creating the function make-cd
which is defined as follows:
(defun make-cd (title artist rating ripped)
(list :title title :artist artist :rating rating :ripped ripped))
Within my REPL (using SLIME) this seems to go according to plan... until I come to add a value to the database, e.g.
(make-cd "Roses" "Kathy Mattea" 7 t)
(:TITLE "Roses" :ARTIST "Kathy Mattea" :RATING 7 :RIPPED T)
Then I get the following error message
Undefined function :TITLE called with arguments ("Roses"
:ARTIST
"Kathy Mattea"
:RATING
7
:RIPPED
T) .
[Condition of type CCL::UNDEFINED-FUNCTION-CALL]
This code is character-for-character what is written in the book and there is no note to explain the error, or what this error means.
I am new to Lisp and have no idea what has gone wrong here!
in the book the instruction to add an entry to the database is:
CL-USER>
is the prompt of the REPL, followed by your input.the line that follows is does not start with a prompt and indicates the output that the function call returns:
you should only enter the first line, then verify that the output you get matches the second line.