Very good Prolog intro

Fond a very good Prolog intro. (Should of course better have learned prolog long ago... but didn't find no course for it before, and it's only now that I start to have aconcrete use for it ... )

It made me for the first time understand the meaning of bagof/3 and setof/3, since they compare it towards the easier-to-understand findall/3.

Tags: