Syntax:

stream-element-type stream => typespec

Arguments and Values:

stream---a stream.

typespec---a type specifier.

Description:

stream-element-type returns a type specifier that indicates the types of objects that may be read from or written to stream.

Streams created by open have an element type restricted to integer or a subtype of type character.

Examples:

;; Note that the stream must accomodate at least the specified type,
;; but might accomodate other types.  Further note that even if it does
;; accomodate exactly the specified type, the type might be specified in
;; any of several ways.
 (with-open-file (s "test" :element-type '(integer 0 1)
                           :if-exists :error
                           :direction :output)
   (stream-element-type s))
=>  INTEGER
OR=>  (UNSIGNED-BYTE 16)
OR=>  (UNSIGNED-BYTE 8)
OR=>  BIT
OR=>  (UNSIGNED-BYTE 1)
OR=>  (INTEGER 0 1)
OR=>  (INTEGER 0 (2))

Side Effects: None.

Affected By: None.

Exceptional Situations:

Should signal an error of type type-error if stream is not a stream.

See Also: None.

Notes: None.