Skip to main content

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

TODO: Please contribute to this page by adding explanations and examples

(interactive-stream-p )