ptolemy.domains.sr.lib
Class AbsentToken

java.lang.Object
  |
  +--ptolemy.data.Token
        |
        +--ptolemy.domains.sr.lib.AbsentToken

All Implemented Interfaces:

java.io.Serializable

public class AbsentToken

extends Token

A placeholder that represents the absence of a token.

Since:

Ptolemy II 2.0

Version:

$Id: AbsentToken.java,v 1.4 2002/02/21 20:30:59 cxh Exp $

Author:

Paul Whitaker

See Also:

Serialized Form

Field Summary

static AbsentToken

ABSENT An instance of an absent token.

Constructor Summary

AbsentToken()
Construct a token with value false

Methods inherited from class ptolemy.data.Token

_notSupportedMessage, add, addReverse, convert, divide, divideReverse, equals, getType, hashCode, isCloseTo, isCloseTo, isEqualTo, modulo, moduloReverse, multiply, multiplyReverse, one, subtract, subtractReverse, toString, zero

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

ABSENT

public static AbsentToken ABSENT

An instance of an absent token.

Constructor Detail

AbsentToken

public AbsentToken()

Construct a token with value false