Arguments: stream
The input-handle of the stream is queried to see if reading can be done. True is returned if reading can be done, else nil is returned. If the handle is itself a stream (an encapsulation), the stream is examined in a way similar to a listen, but an eof always causes a return of true.
See streams.htm for information on the simple-streams implementation in Allegro CL.
The documentation is described in introduction.htm and the index is in index.htm.
Copyright (c) 1998-2000, Franz Inc. Berkeley, CA., USA. All rights reserved.
Created 2000.10.5.