mention the format("~s", [Ls]) pattern and new library(pio) predicates
If at all possible, format_//2 should be used, to stress pure parts
that enable easy testing etc. If necessary, you can emit the list Ls
- with maplist(put_char, Ls).
+ with maplist(put_char, Ls) or, much faster, with format("~s", [Ls]).
+ Ideally, however, you use phrase_to_file/2 or phrase_to_stream/2
+ from library(pio) to write the described list directly to a file
+ or stream, respectively: phrase_to_stream(format_(..., [...]), S).
+ The advantage of this is that an ideal implementation writes
+ the characters as they become known, without manifesting the list.
The entire library only works if the Prolog flag double_quotes
is set to chars, the default value in Scryer Prolog. This should
