public class count extends DefaultInternalAction
Internal action: .count
.
Description: counts the number of occurrences of a particular belief (pattern) in the agent's belief base.
Parameters:
Examples:
.count(a(2,_),N)
: counts the number of beliefs
that unify with a(2,_)
; N
unifies with
this quantity..count((a(2,X)& X>10),N)
: counts the number of beliefs
that unify with a(2,X)
and X > 10; N
unifies with
this quantity..count(a(2,_),5)
: succeeds if the BB has exactly 5
beliefs that unify with a(2,_)
.findall
,
function version
,
Serialized FormConstructor and Description |
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count() |
Modifier and Type | Method and Description |
---|---|
protected void |
checkArguments(Term[] args) |
java.lang.Object |
execute(TransitionSystem ts,
Unifier un,
Term[] args)
Executes the internal action.
|
int |
getMaxArgs() |
int |
getMinArgs() |
canBeUsedInContext, destroy, prepareArguments, suspendIntention
public int getMinArgs()
getMinArgs
in class DefaultInternalAction
public int getMaxArgs()
getMaxArgs
in class DefaultInternalAction
protected void checkArguments(Term[] args) throws JasonException
checkArguments
in class DefaultInternalAction
JasonException
public java.lang.Object execute(TransitionSystem ts, Unifier un, Term[] args) throws java.lang.Exception
InternalAction
execute
in interface InternalAction
execute
in class DefaultInternalAction
java.lang.Exception