SWI-Prolog -- csv_write

Availability::- use_module(library(csv)).(can be autoloaded)

[det]csv_write_stream(+Stream, +Data, +Options)

Write the rows in Data to Stream. This is similar to csv_write_file/3, but can deal with data that is produced incrementally. The example below saves all answers from the predicate data/3 to File.

save_data(File) :-
   setup_call_cleanup(
       open(File, write, Out),
       forall(data(C1,C2,C3),
              csv_write_stream(Out, [row(C1,C2,C3)], [])),
       close(Out)).