Creates a date object denoting the given ordinal date.
The day of year should be a negative or a positive number (as a relative day from the end of year when negative). It should not be zero.
Date.ordinal(2001) #=> #<Date: 2001-01-01 ...> Date.ordinal(2001,34) #=> #<Date: 2001-02-03 ...> Date.ordinal(2001,-1) #=> #<Date: 2001-12-31 ...>
Returns true if the date is Friday.
Returns true if the date is on or after the day of calendar reform.
Date.new(1582,10,15).gregorian? #=> true (Date.new(1582,10,15) - 1).gregorian? #=> false
Returns the Julian day number denoting the day of calendar reform.
Date.new(2001,2,3).start #=> 2299161.0 Date.new(2001,2,3,Date::GREGORIAN).start #=> -Infinity
This method is equivalent to new_start(Date::ENGLAND).
This method is equivalent to new_start(Date::GREGORIAN).
Iterates evaluation of the given block, which takes a date object. The limit should be a date object.
Date.new(2001).step(Date.new(2001,-1,-1)).select{|d| d.sunday?}.size #=> 52
Returns the value as a string for inspection.
Date.new(2001,2,3).inspect #=> "#<Date: 2001-02-03>" DateTime.new(2001,2,3,4,5,6,'-7').inspect #=> "#<DateTime: 2001-02-03T04:05:06-07:00>"
Creates a DateTime object denoting the given ordinal date.
DateTime.ordinal(2001,34) #=> #<DateTime: 2001-02-03T00:00:00+00:00 ...> DateTime.ordinal(2001,34,4,5,6,'+7') #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...> DateTime.ordinal(2001,-332,-20,-55,-54,'+7') #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
Returns a detailed string representing time. Unlike to_s, preserves subsecond in the representation for easier debugging.
t = Time.now t.inspect #=> "2012-11-10 18:16:12.261257655 +0100" t.strftime "%Y-%m-%d %H:%M:%S.%N %z" #=> "2012-11-10 18:16:12.261257655 +0100" t.utc.inspect #=> "2012-11-10 17:16:12.261257655 UTC" t.strftime "%Y-%m-%d %H:%M:%S.%N UTC" #=> "2012-11-10 17:16:12.261257655 UTC"
Returns the minute of the hour (0..59) for time.
t = Time.now #=> 2007-11-19 08:25:51 -0600 t.min #=> 25
Returns true if time occurs during Daylight Saving Time in its time zone.
# CST6CDT: Time.local(2000, 1, 1).zone #=> "CST" Time.local(2000, 1, 1).isdst #=> false Time.local(2000, 1, 1).dst? #=> false Time.local(2000, 7, 1).zone #=> "CDT" Time.local(2000, 7, 1).isdst #=> true Time.local(2000, 7, 1).dst? #=> true # Asia/Tokyo: Time.local(2000, 1, 1).zone #=> "JST" Time.local(2000, 1, 1).isdst #=> false Time.local(2000, 1, 1).dst? #=> false Time.local(2000, 7, 1).zone #=> "JST" Time.local(2000, 7, 1).isdst #=> false Time.local(2000, 7, 1).dst? #=> false
Returns true if time occurs during Daylight Saving Time in its time zone.
# CST6CDT: Time.local(2000, 1, 1).zone #=> "CST" Time.local(2000, 1, 1).isdst #=> false Time.local(2000, 1, 1).dst? #=> false Time.local(2000, 7, 1).zone #=> "CDT" Time.local(2000, 7, 1).isdst #=> true Time.local(2000, 7, 1).dst? #=> true # Asia/Tokyo: Time.local(2000, 1, 1).zone #=> "JST" Time.local(2000, 1, 1).isdst #=> false Time.local(2000, 1, 1).dst? #=> false Time.local(2000, 7, 1).zone #=> "JST" Time.local(2000, 7, 1).isdst #=> false Time.local(2000, 7, 1).dst? #=> false
Returns true if time represents Friday.
t = Time.local(1987, 12, 18) #=> 1987-12-18 00:00:00 -0600 t.friday? #=> true
Stores the specified string value in the database, indexed via the string key provided.
Returns the number of entries in the database.
Returns a Hash (not a DBM database) created by using each value in the database as a key, with the corresponding key as its value.
Returns true if the database contains the specified key, false otherwise.
Returns a description of this struct as a string.
Returns the number of struct members.
Customer = Struct.new(:name, :address, :zip) joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345) joe.length #=> 3