Class Magnitude

Inheritance:

Object  »
  Magnitude
    Character  »
    DateAndTime  »
    Number  »
      Float  »
      Fraction  »
      Integer  »
        LargePositiveInteger
          LargeNegativeInteger
        SmallInteger
    Time  »

Magnitude is the common superclass of entities that can be compared along a linear dimension. Examples of such objects are time values , calendar dates, numbers, the letters of the alphabet.

Subclasses of Magnitude have to implement these instance messages:

• < aMagnitude
  has to answer a boolean value. true is answered when the receiver is smaller than aMagnitude.

• = aMagnitude
  has to answer a boolean value. true is answered when the receiver and aMagnitude are equal.

• hash
  has to answer an integer value that has all required properties of a hash value.

Instance methods

• between: min and: max
  Answer whether the receiver is less than or equal to the argument, max, and greater than or equal to the argument, min

• max: aMagnitude
  Answer the receiver or the argument, whichever has the greater magnitude.

• min: aMagnitude
  Answer the receiver or the argument, whichever has the lesser magnitude.