Is there a C++ library for this?

vsurlan · 06-29-2004, 12:51 PM

Greets. I would like to code in C++ something like:

Rule rl("5.6.1978+7d");
while (1)
if (rl.ocurred()) go_to_grocery_store();

And:

Rule birthday_rule("11.6.*.5:20");
while (1)
if (birthday_rule.ocurred()) congratulate_birthday_at_5:20();

What is the name of the library that implements this?
Thanks in advance.

Komakino · 06-29-2004, 03:37 PM

Couldn't you define a string containing the birthday date, or part of the birthday date and then use the std::string::startwith(), endswith() and contains() methods (or similar, these particular names might be the Java names, but equivalents exist in C++) to compar the date with the current date and time in particular format? The idea of rules is more suited to a language like prolog or lisp.

vsurlan · 07-01-2004, 04:53 AM

I think this is too complex functionality to be implemented in such a manner. And if I need any extensions I will endup in lots of trouble if I don't leave any room for new functionality. I was kind of hoping someone already did this (and probably has). But noone seems to be aware of such a library.

jschiwal · 07-01-2004, 07:39 AM

Sounds like you want to build a rule based engine.

Look at this link, maybe it would help.
http://www.tldp.org/HOWTO/AI-Alife-HOWTO-2.html