The predicates below can be used for switching between the implicit
and the explicit stream-based I/O predicates.
- [ISO]set_input(+Stream)
- Set the current input stream to become Stream. Thus,
open(file,
read, Stream), set_input(Stream) is equivalent to see(file).
- [ISO]set_output(+Stream)
- Set the current output stream to become Stream. See also
with_output_to/2.
- [ISO]current_input(-Stream)
- Get the current input stream. Useful for getting access to the status
predicates associated with streams.
- [ISO]current_output(-Stream)
- Get the current output stream.
