jason.stdlib
Class concat

Package class diagram package concat
java.lang.Object
  extended by jason.asSemantics.DefaultInternalAction
      extended by jason.stdlib.concat
All Implemented Interfaces:
InternalAction, java.io.Serializable

public class concat
extends DefaultInternalAction

Internal action: .concat.

Description: concatenates strings or lists.

Parameters:

Parameters that are not string are concatenated using the toString method of their class.

Examples:

Note: this internal action does not implement backtrack. You if need backtrack, you can add and use the following rules in your code:

  concat([ ], L, L).
  concat([H|T], L, [H|M]) :- concat(T, L, M).
  

See Also:
delete, length, member, sort, substring, nth, max, min, reverse, difference, intersection, union, Serialized Form

Constructor Summary
concat()
           
 
Method Summary
static InternalAction create()
           
 java.lang.Object execute(TransitionSystem ts, Unifier un, Term[] args)
          Executes the internal action.
 
Methods inherited from class jason.asSemantics.DefaultInternalAction
canBeUsedInContext, checkArguments, getMaxArgs, getMinArgs, prepareArguments, suspendIntention
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

concat

public concat()
Method Detail

create

public static InternalAction create()

execute

public java.lang.Object execute(TransitionSystem ts,
                                Unifier un,
                                Term[] args)
                         throws java.lang.Exception
Description copied from interface: InternalAction
Executes the internal action. It should return a Boolean or an Iterator. A true boolean return means that the IA was successfully executed. An Iterator result means that there is more than one answer for this IA (e.g. see member internal action).

Specified by:
execute in interface InternalAction
Overrides:
execute in class DefaultInternalAction
Throws:
java.lang.Exception