write-string
string &optional output-stream &key start end ⇒ string
write-line
string &optional output-stream &key start end ⇒ string
string—a string.
output-stream – an output stream designator. The default is standard output.
start, end—bounding index designators of string.
The defaults for start and end are 0
and nil, respectively.
write-string writes the characters of the subsequence of string bounded by start and end to output-stream. write-line does the same thing, but then outputs a newline afterwards.
(prog1 (write-string "books" nil :end 4) (write-string "worms"))|>
bookworms ⇒ "books" (progn (write-char #\*) (write-line "test12" *standard-output* :end 5) (write-line "*test2") (write-char #\*) nil)|>
*test1|>
*test2|>
* ⇒ NIL
*standard-output*, *terminal-io*.
read-line [Function] , write-char [Function]
write-line and write-string return string, not the substring bounded by start and end.
(write-string string) ≡ (dotimes (i (length string) (write-char (char string i))) (write-line string) ≡ (prog1 (write-string string) (terpri))