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.
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