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Index
input-stream-p Streams Dictionary open-stream-p
Function

interactive-stream-p

interactive-stream-p stream ⇒ generalized-boolean

Arguments and Values

streama stream.
generalized-booleana 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
       (error "The frammis is out of tolerance by ~D

Exceptional Situations

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

See Also

Stream Concepts

Backlinks

Introduction to Streams, listen, Stream Arguments to Standardized Functions, Streams Dictionary, Symbols in the COMMON-LISP Package