How to get a list of objects in Prolog -


i resolving prolog exercises when fond myself difficulties resolving following one: consider have fact base object:

object(obj1).  object(obj2).  object(obj3).  object(obj4).  object(obj5).  material(obj1,wood).  material(obj2,wood).  material(obj3, glass).  material(obj4, glass).  material(obj5, iron).  type(obj1, able).  type(obj2, chair).  type(obj3, mesa).  type(obj4, jar).  type(obj5, rattle).  weight(obj1, 10.5).  weight(obj2, 1.5).  weight(obj3, 1.6).  weight(obj4, 0.5).  weight(obj5, 1.8).   

now idea make predicate object_description(list) list joining of each object it's caracteristics, like:

([obj1-wood-table-10.5, obj2-wood-chair-1.5, …, obj5-iron-rattle-1.8] )  

i tried using bagof , findall couldn't find right answer.

thx in advance

 ?- findall(o-m-t-w,(object(o),material(o,m),type(o,t),weight(o,w)),res). res = [obj1-wood-able-10.5, obj2-wood-chair-1.5, obj3-glass-mesa-1.6, obj4-glass-jar-0.5, obj5-iron-rattle-1.8]. 

Comments

Popular posts from this blog

c++ - Convert big endian to little endian when reading from a binary file -

C#: Application without a window or taskbar item (background app) that can still use Console.WriteLine() -

unicode - Are email addresses allowed to contain non-alphanumeric characters? -