interactive-stream-p
interactive-stream-p Function
Syntax:
interactive-stream-p stream → generalized-boolean
Arguments and Values:
stream—a stream.
generalized-boolean—a generalized boolean.
Description:
Returns true if stream is an interactive stream; otherwise, returns false.
Examples:
(when (> measured limit)
(let ((error (round (\* (- measured limit) 100)
limit)))
(unless (if (interactive-stream-p \*query-io\*)
(yes-or-no-p "The frammis is out of tolerance by ~D%.~@
Is it safe to proceed? " error)
(< error 15)) ;15% is acceptable
(error "The frammis is out of tolerance by ~D%." error))))
Exceptional Situations:
Should signal an error of type type-error if stream is not a stream.
See Also:
Section 21.1 (Stream Concepts)
Expanded Reference: interactive-stream-p
tip
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(interactive-stream-p )