ANSI Common Lisp 21 Streams 21.2 Dictionary of Streams
21.2.23 write-string, write-line
Function
- Syntax:
-
write-string
string &optional output-stream &key start end
string
write-line
string &optional output-stream &key start end
string
- Arguments and Values:
-
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.
- Description:
-
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.
- Examples:
-
(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
- Affected By:
-
*standard-output*,
*terminal-io*.
- See Also:
-
read-line, write-char
- Notes:
-
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))
- Allegro CL Implementation Details:
-
None.