Ruby

Day 20/DateTIme_class.rb

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+=begin
+
+    Various ways to get Time and Date
+    
+    1. Time class
+    2. Date class
+    3. DateTime class
+    
+    # Date.new(yyyy,mm,dd)
+    
+    # DateTime.new(yyyy, mm, dd, hh, mm, ss,'TimeZone')
+
+=end
+
+
+require 'date'
+
+d = Date.new(2022, 07, 20)
+
+puts d
+
+
+d = Date.new
+
+puts d
+
+
+d = Date.parse('2000-07-20')
+
+puts d
+
+
+d = Time.new(2000, 07, 20).to_date
+
+puts d
+
+
+d = Time.new(2000, 07, 20).to_date
+
+puts d.year
+
+
+d = Time.new(2000, 07, 20).to_date
+
+puts d.month
+
+
+d = Date.new(2000, 07, 20).to_date
+
+d = d + 1
+
+puts d
+
+
+d = Date.parse('20th Juky 2000').to_date
+
+d = d + 1
+
+puts d
+
+
+dt = DateTime.new(2000, 07, 20, 3, 30, 45, '+0530')
+
+puts dt

Day 20/Date_&_Time.rb

@@ -0,0 +1,94 @@
+# Various ways to initialize the time object
+
+# Time.new(YYYY, mm, dd, hh, mm, ss, 'Time Zone')
+
+time = Time.new(2022, 7, 20, 21, 30, 45, '+05:30')
+
+puts time
+
+
+time = Time.new(2022, 7, 20, 21, 30, 45)
+
+puts time
+
+
+time = Time.new(2022, 7, 20)
+
+puts time
+
+
+time = Time.new(2022)
+
+puts time
+
+
+time = Time.new
+
+puts time
+
+
+puts time.year
+
+puts time.month
+
+puts time.day
+
+puts time.hour
+
+puts time.min
+
+puts time.sec
+
+puts time.wday
+
+# 0 - sunday
+# 1 - monday
+# 2 - tueday
+# 3 - wednesday
+# 4 - hursday
+# 5 - friday
+# 6 - saturday
+
+puts time.yday
+
+puts time.usec
+
+
+puts time.thursday?
+
+puts time.sunday?
+
+
+puts time.dst? # Day light saving time
+
+
+puts time.subsec
+
+
+puts time.to_a
+
+
+puts time.to_i
+
+
+puts time.to_f
+
+
+time2 = time + 259200
+
+puts time2
+
+
+puts time<=>time2
+
+puts time2<=>time
+
+puts time2<=>time2
+
+puts time.eql?(time2)
+
+puts time == time2
+
+puts time < time2
+
+puts time > time2

Day 20/Formatting_Time_&_Date.rb

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+# Formatting Time and Date
+
+%a - The abbreviated weekday name (Sun)
+
+%A - The full weekday name (Sunday)
+
+%b - The abbreviated month name (Jan)
+
+%B - The full month name (January)
+
+%c - The preferred local date and time representation
+
+%d - Day of the month (01 to 31)
+
+%H - Hour of the day, 24-hour clock (00 to 23)
+
+%I - Hour of the day, 12-hour clock (01 to 12)
+
+%j - Day of the year (001 to 366)
+
+%m - Month of the year (01 to 12)
+
+%M - Minute of the hour (00 to 59)
+
+%p - Meridian indicator (AM or PM)
+
+%S - Second of the minute (00 to 60)
+
+%U - Week number of the current year, starting with the first Sunday as the first day of the first week (00 to 53)
+
+%W - Week number of the current year, starting with the first Monday as the first day of the first week (00 to 53)
+
+%w - Day of the week (Sunday is 0, 0 to 6)
+
+%x - Preferred representation for the date alone, no time
+
+%X - Preferred representation for the time alone, no date
+
+%y - Year without a century (00 to 99)
+
+%Y - Year with century
+
+%Z - Time zone name
+
+%% - Literal % character