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broadcast-stream-streams

broadcast-stream-streams Function

Syntax:

broadcast-stream-streams broadcast-stream → streams

Arguments and Values:

broadcast-stream—a broadcast stream.

streams—a list of streams.

Description:

Returns a list of output streams that constitute all the streams to which the broadcast-stream is broadcasting.

Expanded Reference: broadcast-stream-streams​

Basic Usage​

broadcast-stream-streams returns a list of the component output streams of a broadcast stream.

(let ((a (make-string-output-stream))
      (b (make-string-output-stream)))
  (let ((bc (make-broadcast-stream a b)))
    (length (broadcast-stream-streams bc))))
=> 2

Empty Broadcast Stream​

A broadcast stream with no component streams returns an empty list.

(broadcast-stream-streams (make-broadcast-stream))
=> NIL

Verifying Component Streams​

(let ((a (make-string-output-stream))
      (b (make-string-output-stream)))
  (let* ((bc (make-broadcast-stream a b))
         (components (broadcast-stream-streams bc)))
    (list (eq (first components) a)
          (eq (second components) b))))
=> (T T)