Ah, I should have guessed that. I will figure out how to get Ubuntu to upgrade. What is the latest version?
David Logan
You're looking to the documentation of a recent GNU Prolog version but running an old one. On 6 Jul 2017, at 16:08, David Logan <address@hidden> wrote:
I am using the manual, and here is the section verbatim:
——————————————————————————————————————————
8.18.4 between/3, for/3
Templates
between(+integer, +integer, ?integer)
for(?integer, +integer, +integer)
Description
between(Lower, Upper, Counter) generates an sequence of backtracking choices instantiating Counter to the values Lower, Lower+1,…, Upper.
for(Counter, Lower, Upper) is equivalent to between(Lower, Upper, Counter). This predicate is deprecated and new code should use between/3.
——————————————————————————————————————————
Here are my results:
address@hidden:~/workspace/prolog/bookworm$ prolog
GNU Prolog 1.3.0
By Daniel Diaz
Copyright (C) 1999-2007 Daniel Diaz
| ?- for(X,0,10), write(X), nl, fail.
0
1
2
3
4
5
6
7
8
9
10
no
| ?- between(0,10,X), write(X), nl, fail.
uncaught exception: error(existence_error(procedure,between/3),top_level/0)
| ?-
Again, what might I be missing here?
Thank you,
David Logan
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