Returns true if rat is less than 0.
Synonym for $stdin.
This method is an alias for http_header, when HTML5 tag maker is inactive.
NOTE: use http_header to create HTTP header blocks, this alias is only provided for backwards compatibility.
Using header with the HTML5 tag maker will create a <header> element.
Returns a new Date object constructed from the arguments.
Argument cwyear gives the year, and should be an integer.
Argument cweek gives the index of the week within the year, and should be in range (1..53) or (-53..-1); in some years, 53 or -53 will be out-of-range; if negative, counts backward from the end of the year:
Date.commercial(2022, 1, 1).to_s # => "2022-01-03" Date.commercial(2022, 52, 1).to_s # => "2022-12-26"
Argument cwday gives the indes of the weekday within the week, and should be in range (1..7) or (-7..-1); 1 or -7 is Monday; if negative, counts backward from the end of the week:
Date.commercial(2022, 1, 1).to_s # => "2022-01-03" Date.commercial(2022, 1, -7).to_s # => "2022-01-03"
When cweek is 1:
If January 1 is a Friday, Saturday, or Sunday, the first week begins in the week after:
Date::ABBR_DAYNAMES[Date.new(2023, 1, 1).wday] # => "Sun" Date.commercial(2023, 1, 1).to_s # => "2023-01-02" Date.commercial(2023, 1, 7).to_s # => "2023-01-08"
Otherwise, the first week is the week of January 1, which may mean some of the days fall on the year before:
Date::ABBR_DAYNAMES[Date.new(2020, 1, 1).wday] # => "Wed" Date.commercial(2020, 1, 1).to_s # => "2019-12-30" Date.commercial(2020, 1, 7).to_s # => "2020-01-05"
See argument start.
Related: Date.jd, Date.new, Date.ordinal.
Returns commercial-date year for self (see Date.commercial):
Date.new(2001, 2, 3).cwyear # => 2001 Date.new(2000, 1, 1).cwyear # => 1999
Returns true if self is a Monday, false otherwise.
Returns true if self is a Thursday, false otherwise.
Returns the Julian start date for calendar reform; if not an infinity, the returned value is suitable for passing to Date#jd:
d = Date.new(2001, 2, 3, Date::ITALY) s = d.start # => 2299161.0 Date.jd(s).to_s # => "1582-10-15" d = Date.new(2001, 2, 3, Date::ENGLAND) s = d.start # => 2361222.0 Date.jd(s).to_s # => "1752-09-14" Date.new(2001, 2, 3, Date::GREGORIAN).start # => -Infinity Date.new(2001, 2, 3, Date::JULIAN).start # => Infinity
See argument start.
Returns a string representation of the date in self, formatted according the given format:
Date.new(2001, 2, 3).strftime # => "2001-02-03"
For other formats, see Formats for Dates and Times.
Equivalent to strftime with argument '%a %b %e %T %Y' (or its shorthand form '%c'):
Date.new(2001, 2, 3).asctime # => "Sat Feb 3 00:00:00 2001"
See asctime.
Equivalent to strftime with argument '%a %b %e %T %Y' (or its shorthand form '%c'):
Date.new(2001, 2, 3).asctime # => "Sat Feb 3 00:00:00 2001"
See asctime.
Creates a DateTime object denoting the given week date.
DateTime.commercial(2001) #=> #<DateTime: 2001-01-01T00:00:00+00:00 ...> DateTime.commercial(2002) #=> #<DateTime: 2001-12-31T00:00:00+00:00 ...> DateTime.commercial(2001,5,6,4,5,6,'+7') #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...>
Returns a string representation of self, formatted according the given +format:
DateTime.now.strftime # => "2022-07-01T11:03:19-05:00"
For other formats, see Formats for Dates and Times:
With no argument given:
Returns self if self is a local time.
Otherwise returns a new Time in the user’s local timezone:
t = Time.utc(2000, 1, 1, 20, 15, 1) # => 2000-01-01 20:15:01 UTC t.localtime # => 2000-01-01 14:15:01 -0600
With argument zone given, returns the new Time object created by converting self to the given time zone:
t = Time.utc(2000, 1, 1, 20, 15, 1) # => 2000-01-01 20:15:01 UTC t.localtime("-09:00") # => 2000-01-01 11:15:01 -0900
For forms of argument zone, see Timezone Specifiers.
Returns self, converted to the UTC timezone:
t = Time.new(2000) # => 2000-01-01 00:00:00 -0600 t.utc? # => false t.utc # => 2000-01-01 06:00:00 UTC t.utc? # => true
Related: Time#getutc (returns a new converted Time object).
Returns a string representation of self, formatted by strftime('%a %b %e %T %Y') or its shorthand version strftime('%c'); see Formats for Dates and Times:
t = Time.new(2000, 12, 31, 23, 59, 59, 0.5) t.ctime # => "Sun Dec 31 23:59:59 2000" t.strftime('%a %b %e %T %Y') # => "Sun Dec 31 23:59:59 2000" t.strftime('%c') # => "Sun Dec 31 23:59:59 2000"
Related: Time#to_s, Time#inspect:
t.inspect # => "2000-12-31 23:59:59.5 +000001" t.to_s # => "2000-12-31 23:59:59 +0000"
Returns a string representation of self, formatted by strftime('%a %b %e %T %Y') or its shorthand version strftime('%c'); see Formats for Dates and Times:
t = Time.new(2000, 12, 31, 23, 59, 59, 0.5) t.ctime # => "Sun Dec 31 23:59:59 2000" t.strftime('%a %b %e %T %Y') # => "Sun Dec 31 23:59:59 2000" t.strftime('%c') # => "Sun Dec 31 23:59:59 2000"
Related: Time#to_s, Time#inspect:
t.inspect # => "2000-12-31 23:59:59.5 +000001" t.to_s # => "2000-12-31 23:59:59 +0000"
Returns the integer second of the minute for self, in range (0..60):
t = Time.new(2000, 1, 2, 3, 4, 5, 6) # => 2000-01-02 03:04:05 +000006 t.sec # => 5
Note: the second value may be 60 when there is a leap second.