[Glass] understanding the DateTime instance creation API

[Dale Henrichs via Glass]

Paul,

I've submitted bug46315, because it definitely looks like DateTime is 
broken.

I've expanded your example to include DateAndTime results and I believe 
that DateAndTime is getting the correct answers. Also DateAndTime has 
the default printString and parsing methods that you desire.

Here are the results:

1@       -> anArray( DateTime, 15/07/2016 03:10:10, 3, 
'2016-07-15T03:10:10+0000', )
2@       -> anArray( DateAndTime, 2016-07-15T10:10:10+00:00, 10, 
'2016-07-15T10:10:10+00:00', )
3@       -> anArray( DateTime, 15/07/2016 10:10:10, 10, 
'2016-07-15T10:10:10-0700', )
4@       -> anArray( DateAndTime, 2016-07-15T10:10:10-07:00, 10, 
'2016-07-15T10:10:10-07:00', )


and the code:

| yr month day hour min second utc pst utcTime pstTime utcAndTime 
pstAndTime |
   yr := 2016.
   month := 7.
   day := 15.
   hour := 10.
   min := 10.
   second := 10.
   utc := TimeZone named: 'UTC'.
   pst := TimeZone named: 'America/Los_Angeles'.
   utcTime := DateTime
     newWithYear: yr
     month: month
     day: day
     hours: hour
     minutes: min
     seconds: second
     timeZone: utc.
   utcAndTime := DateAndTime
     year: yr
     month: month
     day: day
     hour: hour
     minute: min
     second: second
     offset: 0 hours.
   pstTime := DateTime
     newWithYear: yr
     month: month
     day: day
     hours: hour
     minutes: min
     seconds: second
     timeZone: pst.
   pstAndTime := DateAndTime
     year: yr
     month: month
     day: day
     hour: hour
     minute: min
     second: second
     offset: -7 hours.
   ^ {(Array
     with: utcTime class
     with: utcTime
     with: utcTime hour
     with: utcTime asStringISO8601).
   (Array
     with: utcAndTime class
     with: utcAndTime
     with: utcAndTime hour
     with: utcAndTime asString).
   (Array
     with: pstTime class
     with: pstTime
     with: pstTime hour
     with: pstTime asStringISO8601).
   (Array
     with: pstAndTime class
     with: pstAndTime
     with: pstAndTime hour
     with: pstAndTime asString)}