21.2.41 make-broadcast-stream [Function]

make-broadcast-stream &rest streams => broadcast-stream

Arguments and Values::

stream—an output stream.

broadcast-stream—a broadcast stream.

Description::

Returns a broadcast stream.

Examples::

      (setq a-stream (make-string-output-stream)
             b-stream (make-string-output-stream)) =>  #<String Output Stream>
      (format (make-broadcast-stream a-stream b-stream)
               "this will go to both streams") =>  NIL
      (get-output-stream-string a-stream) =>  "this will go to both streams"
      (get-output-stream-string b-stream) =>  "this will go to both streams"

Exceptional Situations::

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

See Also::

broadcast-stream-streams