Class Date

Inheritance:

Object  »
  Magnitude  »
    Timespan  »
      Date

Date provides methods for dealing with calendar dates in different formats. Internally, a date is represented as a Timespan with a length of one day that begins at midnight.

Important Class Methods:

• today
  Answer the current date.

• newDay: day month: month year: year
  Arguments day, month and year are all integers, except month may be a string. For compatibility, two digit dates in the range 00..49 are from 2000, 50..99 from 1900. Please use ALWAYS four digits year numbers.

• newDay: day year: year
  Answer an instance of me which is dayCount days after the beginning of the year referenceYear.

• leapYear: year
  Answer 1 if the year yearInteger is a leap year; answer 0 if it is not. (This method does not answer a boolean value because for the purposes of date arithmetic, an integer value is more convenient to use.)

Important Instance Methods:

• < aDate
  Answer whether aDate follows the date of the receiver in time.

• = aDate
  Answer whether aDate is the same day as the receiver.

• addDays: dayCount
  Answer a Date that is dayCount days after the receiver.

• subtractDays: dayCount
  Answer a Date that is dayCount days before the receiver.

• subtractDate: aDate
  Answer the number of days between the receiver and aDate.