Package jason.stdlib
Class difference
java.lang.Object
jason.asSemantics.DefaultInternalAction
jason.stdlib.difference
- All Implemented Interfaces:
InternalAction
,java.io.Serializable
- Direct Known Subclasses:
intersection
,union
@Manual(literal=".difference(arg0,arg1,arg2)", hint="the difference between two sets", argsHint={"the first list","the list to be compared with the first","the resulting list with the difference of the comparison"}, argsType={"list","list","list"}, examples={".difference(\"[a,b,c]\",\"[b,e]\",X): X unifies with \"[a,c]\"",".difference(\"[a,b,a,c]\",\"[f,e,a,c]\",X): X unifies with \"[b]\""}, seeAlso={"jason.stdlib.concat","jason.stdlib.delete","jason.stdlib.length","jason.stdlib.member","jason.stdlib.sort","jason.stdlib.shuffle","jason.stdlib.substring","jason.stdlib.prefix","jason.stdlib.suffix","jason.stdlib.nth","jason.stdlib.max","jason.stdlib.min","jason.stdlib.reverse","jason.stdlib.difference","jason.stdlib.intersection","jason.stdlib.union"}) public class difference extends DefaultInternalAction
Internal action: .difference(S1,S2,S3)
.
Description: S3 is the difference between the sets S1 and S2 (represented by lists). The result set is sorted.
Parameters:
- + arg[0] (a list).
- + arg[1] (a list).
- +/- arg[2]: the difference.
Examples:
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.difference("[a,b,c]","[b,e]",X)
:X
unifies with "[a,c]". -
.difference("[a,b,a,c]","[f,e,a,c]",X)
:X
unifies with "[b]".
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Field Summary
Fields Modifier and Type Field Description private static InternalAction
singleton
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Constructor Summary
Constructors Constructor Description difference()
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Method Summary
Modifier and Type Method Description protected void
checkArguments(Term[] args)
static InternalAction
create()
java.lang.Object
execute(TransitionSystem ts, Unifier un, Term[] args)
Executes the internal action.int
getMaxArgs()
int
getMinArgs()
Methods inherited from class jason.asSemantics.DefaultInternalAction
canBeUsedInContext, destroy, prepareArguments, suspendIntention
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Field Details
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singleton
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Constructor Details
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difference
public difference()
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Method Details
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create
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getMinArgs
public int getMinArgs()- Overrides:
getMinArgs
in classDefaultInternalAction
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getMaxArgs
public int getMaxArgs()- Overrides:
getMaxArgs
in classDefaultInternalAction
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checkArguments
- Overrides:
checkArguments
in classDefaultInternalAction
- Throws:
JasonException
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execute
public java.lang.Object execute(TransitionSystem ts, Unifier un, Term[] args) throws java.lang.ExceptionDescription 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 interfaceInternalAction
- Overrides:
execute
in classDefaultInternalAction
- Throws:
java.lang.Exception
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