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/opt/alt/ruby21/share/ri/2.1.0/system/Time/
//opt/alt/ruby21/share/ri/2.1.0/system/Time/cdesc-Time.ri
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leveli:	textI"time.rb;To:RDoc::Markup::BlankLine�o;	;[I"SWhen 'time' is required, Time is extended with additional methods for parsing ;TI"and converting Times.;T@S;;
i;I"
Features;T@o;	;[I"PThis library extends the Time class with the following conversions between ;TI"#date strings and Time objects:;T@o:RDoc::Markup::List:
@type:BULLET:@items[
o:RDoc::Markup::ListItem:@label0;[o;	;[I"Idate-time defined by {RFC 2822}[http://www.ietf.org/rfc/rfc2822.txt];To;;0;[o;	;[I"IHTTP-date defined by {RFC 2616}[http://www.ietf.org/rfc/rfc2616.txt];To;;0;[o;	;[I"<dateTime defined by XML Schema Part 2: Datatypes ({ISO ;TI"88601}[http://www.iso.org/iso/date_and_time_format]);To;;0;[o;	;[I"+various formats handled by Date._parse;To;;0;[o;	;[I"-custom formats handled by Date._strptime;T@S;;
i;I"
Examples;T@o;	;[I"3All examples assume you have loaded Time with:;T@o:RDoc::Markup::Verbatim;[I"require 'time'
;T:@format0o;	;[I"KAll of these examples were done using the EST timezone which is GMT-5.;T@S;;
i;I"Converting to a String;T@o;;[	I"t = Time.now
;TI"1t.iso8601  # => "2011-10-05T22:26:12-04:00"
;TI"7t.rfc2822  # => "Wed, 05 Oct 2011 22:26:12 -0400"
;TI"5t.httpdate # => "Thu, 06 Oct 2011 02:26:12 GMT"
;T;0S;;
i;I"Time.parse;T@o;	;[I"M#parse takes a string representation of a Time and attempts to parse it ;TI"using a heuristic.;T@o;;[I"<Date.parse("2010-10-31") #=> 2010-10-31 00:00:00 -0500
;T;0o;	;[I"KAny missing pieces of the date are inferred based on the current date.;T@o;;[I"1# assuming the current date is "2011-10-31"
;TI"7Time.parse("12:00") #=> 2011-10-31 12:00:00 -0500
;T;0o;	;[I"SWe can change the date used to infer our missing elements by passing a second ;TI"Sobject that responds to #mon, #day and #year, such as Date, Time or DateTime. ;TI"$We can also use our own object.;T@o;;[I"class MyDate
;TI"%  attr_reader :mon, :day, :year
;TI"
;TI"&  def initialize(mon, day, year)
;TI",    @mon, @day, @year = mon, day, year
;TI"  end
;TI"	end
;TI"
;TI"#d  = Date.parse("2010-10-28")
;TI"#t  = Time.parse("2010-10-29")
;TI"'dt = DateTime.parse("2010-10-30")
;TI"!md = MyDate.new(10,31,2010)
;TI"
;TI";Time.parse("12:00", d)  #=> 2010-10-28 12:00:00 -0500
;TI";Time.parse("12:00", t)  #=> 2010-10-29 12:00:00 -0500
;TI";Time.parse("12:00", dt) #=> 2010-10-30 12:00:00 -0500
;TI";Time.parse("12:00", md) #=> 2010-10-31 12:00:00 -0500
;T;0o;	;[	I"R#parse also accepts an optional block. You can use this block to specify how ;TI"Qto handle the year component of the date. This is specifically designed for ;TI"Qhandling two digit years. For example, if you wanted to treat all two digit ;TI">years prior to 70 as the year 2000+ you could write this:;T@o;;[	I"FTime.parse("01-10-31") {|year| year + (year < 70 ? 2000 : 1900)}
;TI"##=> 2001-10-31 00:00:00 -0500
;TI"FTime.parse("70-10-31") {|year| year + (year < 70 ? 2000 : 1900)}
;TI"##=> 1970-10-31 00:00:00 -0500
;T;0S;;
i;I"Time.strptime;T@o;	;[I"Q#strptime works similar to +parse+ except that instead of using a heuristic ;TI"Rto detect the format of the input string, you provide a second argument that ;TI"5describes the format of the string. For example:;T@o;;[I"JTime.strptime("2000-10-31", "%Y-%m-%d") #=> 2000-10-31 00:00:00 -0500;T;0;
I"lib/time.rb;T;0o;;[0o;	;[I"MTime is an abstraction of dates and times. Time is stored internally as ;TI"Lthe number of seconds with fraction since the _Epoch_, January 1, 1970 ;TI"L00:00 UTC. Also see the library module Date. The Time class treats GMT ;TI"O(Greenwich Mean Time) and UTC (Coordinated Universal Time) as equivalent. ;TI"OGMT is the older way of referring to these baseline times but persists in ;TI")the names of calls on POSIX systems.;T@o;	;[I"MAll times may have fraction. Be aware of this fact when comparing times ;TI"Nwith each other -- times that are apparently equal when displayed may be ;TI"different when compared.;T@o;	;[I"ISince Ruby 1.9.2, Time implementation uses a signed 63 bit integer, ;TI"Bignum or Rational. ;TI"HThe integer is a number of nanoseconds since the _Epoch_ which can ;TI")represent 1823-11-12 to 2116-02-20. ;TI"EWhen Bignum or Rational is used (before 1823, after 2116, under ;TI"<nanosecond), Time works slower as when integer is used.;T@S;;
i;I"
Examples;T@o;	;[I"KAll of these examples were done using the EST timezone which is GMT-5.;T@S;;
i;I"!Creating a new Time instance;T@o;	;[I"MYou can create a new instance of Time with Time::new. This will use the ;TI"Gcurrent system time. Time::now is an alias for this. You can also ;TI"Ppass parts of the time to Time::new such as year, month, minute, etc. When ;TI"Qyou want to construct a time this way you must pass at least a year. If you ;TI"Qpass the year with nothing else time will default to January 1 of that year ;TI"Jat 00:00:00 with the current system timezone. Here are some examples:;T@o;;[	I":Time.new(2002)         #=> 2002-01-01 00:00:00 -0500
;TI":Time.new(2002, 10)     #=> 2002-10-01 00:00:00 -0500
;TI":Time.new(2002, 10, 31) #=> 2002-10-31 00:00:00 -0500
;TI"MTime.new(2002, 10, 31, 2, 2, 2, "+02:00") #=> 2002-10-31 02:02:02 +0200
;T;0o;	;[I"&You can also use #gm, #local and ;TI"A#utc to infer GMT, local and UTC timezones instead of using ;TI" the current system setting.;T@o;	;[I"MYou can also create a new time using Time::at which takes the number of ;TI"6seconds (or fraction of seconds) since the {Unix ;TI"4Epoch}[http://en.wikipedia.org/wiki/Unix_time].;T@o;;[I"6Time.at(628232400) #=> 1989-11-28 00:00:00 -0500
;T;0S;;
i;I"%Working with an instance of Time;T@o;	;[I"NOnce you have an instance of Time there is a multitude of things you can ;TI"Pdo with it. Below are some examples. For all of the following examples, we ;TI"Bwill work on the assumption that you have done the following:;T@o;;[I"4t = Time.new(1993, 02, 24, 12, 0, 0, "+09:00")
;T;0o;	;[I"Was that a monday?;T@o;;[I"t.monday? #=> false
;T;0o;	;[I"What year was that again?;T@o;;[I"t.year #=> 1993
;T;0o;	;[I")Was is daylight savings at the time?;T@o;;[I"t.dst? #=> false
;T;0o;	;[I"!What's the day a year later?;T@o;;[I"6t + (60*60*24*365) #=> 1994-02-24 12:00:00 +0900
;T;0o;	;[I"4How many seconds was that since the Unix Epoch?;T@o;;[I"t.to_i #=> 730522800
;T;0o;	;[I"?You can also do standard functions like compare two times.;T@o;;[I"t1 = Time.new(2010)
;TI"t2 = Time.new(2011)
;TI"
;TI"t1 == t2 #=> false
;TI"t1 == t1 #=> true
;TI"t1 <  t2 #=> true
;TI"t1 >  t2 #=> false
;TI"
;TI"3Time.new(2010,10,31).between?(t1, t2) #=> true;T;0;
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