stream-read-char-no-hang

$Revision: 5.0.2.3 $

Generic Function

Package: EXCL

Arguments: (character-input-stream)

This is used to implement read-char-no-hang. It returns either a character, or nil if no input is currently available, or :eof if end-of-file is reached. The default method provided by fundamental-character-input-stream simply calls stream-read-char; this is sufficient for file streams, but interactive streams should define their own method.

See streams.htm for general information on streams in Allegro CL.

The general documentation description is in introduction.htm. The index in index.htm.