read-byte stream &optional eof-error-p eof-value => byte
Arguments and Values:
stream---a binary input stream.
eof-error-p---a generalized boolean. The default is true.
eof-value---an object. The default is nil.
byte---an integer, or the eof-value.
read-byte reads and returns one byte from stream.
If an end of file occurs and eof-error-p is false, the eof-value is returned.
(with-open-file (s "temp-bytes" :direction :output :element-type 'unsigned-byte) (write-byte 101 s)) => 101 (with-open-file (s "temp-bytes" :element-type 'unsigned-byte) (format t "~S ~S" (read-byte s) (read-byte s nil 'eof))) >> 101 EOF => NIL
Affected By: None.
Should signal an error of type type-error if stream is not a stream.
Should signal an error of type error if stream is not a binary input stream.
If there are no bytes remaining in the stream and eof-error-p is true, an error of type end-of-file is signaled.
read-char, read-sequence, write-byte