Ruby/Справочник/Time
Класс Time
[править]Implements the extensions to the Time class that are described in the documentation for the time.rb library.
Extensions to time to allow comparisons with an early time class.
Примеси
Comparable (<, <=, ==, >, >=, between?)
Константы
CommonYearMonthDays, LeapYearMonthDays, MonthValue, RFC2822_DAY_NAME, RFC2822_MONTH_NAME, ZoneOffset
Методы класса
_load, apply_offset, at, gm, httpdate, local, make_time, mktime, month_days, new, now, parse, rfc2822, times, utc, w3cdtf, xmlschema, yaml_new, zone_offset, zone_utc?
Методы объекта
+, -, <=>, _dump, asctime, ctime, day, dst?, eql?, getgm, getlocal, getutc, gmt?, gmt_offset, gmtime, gmtoff, hash, hour, httpdate, inspect, isdst, iso8601, localtime, marshal_dump, marshal_load, mday, min, month, mon, rfc2822, rfc822, sec, strftime, succ, to_a, to_f, to_i, to_s, to_yaml, tv_sec, tv_usec, usec, utc?, utc_offset, utc, wday, xmlschema, yday, year, zone
Time::_load
[править]Time._load(string) #=> time
Unmarshal a dumped Time object.
Time::apply_offset
[править]Time::apply_offset(year, mon, day, hour, min, sec, off)
(нет описания...)
Time::at
[править]Time.at( aTime ) #=> time
Time.at( seconds [, microseconds] ) #=> time
Creates a new time object with the value given by aTime, or the given number of seconds (and optional microseconds) from epoch. A non-portable feature allows the offset to be negative on some systems.
Time.at(0) #=> Wed Dec 31 18:00:00 CST 1969
Time.at(946702800) #=> Fri Dec 31 23:00:00 CST 1999
Time.at(-284061600) #=> Sat Dec 31 00:00:00 CST 1960
Time::gm
[править]Time.utc( year [, month, day, hour, min, sec, usec] ) => time Time.utc( sec, min, hour, day, month, year, wday, yday, isdst, tz ) => time Time.gm( year [, month, day, hour, min, sec, usec] ) => time Time.gm( sec, min, hour, day, month, year, wday, yday, isdst, tz ) => time
Creates a time based on given values, interpreted as UTC (GMT). The year must be specified. Other values default to the minimum value for that field (and may be nil or omitted). Months may be specified by numbers from 1 to 12, or by the three-letter English month names. Hours are specified on a 24-hour clock (0..23). Raises an ArgumentError if any values are out of range. Will also accept ten arguments in the order output by Time#to_a.
Time.utc(2000,"jan",1,20,15,1) #=> Sat Jan 01 20:15:01 UTC 2000
Time.gm(2000,"jan",1,20,15,1) #=> Sat Jan 01 20:15:01 UTC 2000
Time::httpdate
[править]Time::httpdate(date)
Parses date as HTTP-date defined by RFC 2616 and converts it to a Time object. ArgumentError is raised if date is not compliant with RFC 2616 or Time class cannot represent specified date. See #httpdate for more information on this format.
Time::local
[править]Time.local( year [, month, day, hour, min, sec, usec] ) => time Time.local( sec, min, hour, day, month, year, wday, yday, isdst, tz ) => time Time.mktime( year, month, day, hour, min, sec, usec ) => time
Same as Time::gm, but interprets the values in the local time zone.
Time.local(2000,"jan",1,20,15,1) #=> Sat Jan 01 20:15:01 CST 2000
Time::make_time
[править]Time::make_time(year, mon, day, hour, min, sec, sec_fraction, zone, now)
(нет описания...)
Time::mktime
[править]Time.local( year [, month, day, hour, min, sec, usec] ) => time Time.local( sec, min, hour, day, month, year, wday, yday, isdst, tz ) => time Time.mktime( year, month, day, hour, min, sec, usec ) => time
Same as Time::gm, but interprets the values in the local time zone.
Time.local(2000,"jan",1,20,15,1) #=> Sat Jan 01 20:15:01 CST 2000
Time::month_days
[править]Time::month_days(y, m)
(нет описания...)
Time::new
[править]Time.new -> time
Document-method: now Synonym for Time.new. Returns a Time object initialized to the current system time. Note: The object created will be created using the resolution available on your system clock, and so may include fractional seconds.
a = Time.new #=> Wed Apr 09 08:56:03 CDT 2003
b = Time.new #=> Wed Apr 09 08:56:03 CDT 2003
a == b #=> false
"%.6f" % a.to_f #=> "1049896563.230740"
"%.6f" % b.to_f #=> "1049896563.231466"
Time::now
[править]Time.now -> time
Synonym for Time.new. Returns a Time object initialized to the current system time. Note: The object created will be created using the resolution available on your system clock, and so may include fractional seconds.
a = Time.now #=> Wed Apr 09 08:56:03 CDT 2003
b = Time.now #=> Wed Apr 09 08:56:03 CDT 2003
a == b #=> True
"%.6f" % a.to_f #=> "1049896563.230740"
"%.6f" % b.to_f #=> "1049896563.231466"
Time::parse
[править] Time::parse(date, now=Time.now) {|year| ...}
Parses date using Date._parse and converts it to a Time object. If a block is given, the year described in date is converted by the block. For example:
Time.parse(...) {|y| y < 100 ? (y >= 69 ? y + 1900 : y + 2000) : y}
If the upper components of the given time are broken or missing, they are supplied with those of now. For the lower components, the minimum values (1 or 0) are assumed if broken or missing. For example:
# Suppose it is "Thu Nov 29 14:33:20 GMT 2001" now and
# your timezone is GMT:
Time.parse("16:30") #=> Thu Nov 29 16:30:00 GMT 2001
Time.parse("7/23") #=> Mon Jul 23 00:00:00 GMT 2001
Time.parse("Aug 31") #=> Fri Aug 31 00:00:00 GMT 2001
Since there are numerous conflicts among locally defined timezone abbreviations all over the world, this method is not made to understand all of them. For example, the abbreviation "CST" is used variously as:
-06:00 in America/Chicago,
-05:00 in America/Havana,
+08:00 in Asia/Harbin,
+09:30 in Australia/Darwin,
+10:30 in Australia/Adelaide,
etc.
Based on the fact, this method only understands the timezone abbreviations described in RFC 822 and the system timezone, in the order named. (i.e. a definition in RFC 822 overrides the system timezone definition.) The system timezone is taken from Time.local(year, 1, 1).zone and Time.local(year, 7, 1).zone. If the extracted timezone abbreviation does not match any of them, it is ignored and the given time is regarded as a local time. ArgumentError is raised if Date._parse cannot extract information from date or Time class cannot represent specified date. This method can be used as fail-safe for other parsing methods as:
Time.rfc2822(date) rescue Time.parse(date)
Time.httpdate(date) rescue Time.parse(date)
Time.xmlschema(date) rescue Time.parse(date)
A failure for Time.parse should be checked, though.
Time::rfc2822
[править]Time::rfc2822(date)
Parses date as date-time defined by RFC 2822 and converts it to a Time object. The format is identical to the date format defined by RFC 822 and updated by RFC 1123. ArgumentError is raised if date is not compliant with RFC 2822 or Time class cannot represent specified date. See #rfc2822 for more information on this format.
Time::times
[править]Time.times => struct_tms
Deprecated in favor of Process::times
Time::utc
[править]Time.utc( year [, month, day, hour, min, sec, usec] ) => time Time.utc( sec, min, hour, day, month, year, wday, yday, isdst, tz ) => time Time.gm( year [, month, day, hour, min, sec, usec] ) => time Time.gm( sec, min, hour, day, month, year, wday, yday, isdst, tz ) => time
Creates a time based on given values, interpreted as UTC (GMT). The year must be specified. Other values default to the minimum value for that field (and may be nil or omitted). Months may be specified by numbers from 1 to 12, or by the three-letter English month names. Hours are specified on a 24-hour clock (0..23). Raises an ArgumentError if any values are out of range. Will also accept ten arguments in the order output by Time#to_a.
Time.utc(2000,"jan",1,20,15,1) #=> Sat Jan 01 20:15:01 UTC 2000
Time.gm(2000,"jan",1,20,15,1) #=> Sat Jan 01 20:15:01 UTC 2000
Time::w3cdtf
[править]Time::w3cdtf(date)
(нет описания...)
Time::xmlschema
[править]Time::xmlschema(date)
Parses date as dateTime defined by XML Schema and converts it to a Time object. The format is restricted version of the format defined by ISO 8601. ArgumentError is raised if date is not compliant with the format or Time class cannot represent specified date. See #xmlschema for more information on this format.
Time::yaml_new
[править]Time::yaml_new( klass, tag, val )
(нет описания...)
Time::zone_offset
[править]Time::zone_offset(zone, year=Time.now.year)
(нет описания...)
Time::zone_utc?
[править]Time::zone_utc?(zone)
(нет описания...)
Time#+
[править]time + numeric => time
Addition---Adds some number of seconds (possibly fractional) to time and returns that value as a new time.
t = Time.now #=> Wed Apr 09 08:56:03 CDT 2003
t + (60 * 60 * 24) #=> Thu Apr 10 08:56:03 CDT 2003
Time#-
[править]time - other_time => float time - numeric => time
Difference---Returns a new time that represents the difference between two times, or subtracts the given number of seconds in numeric from time.
t = Time.now #=> Wed Apr 09 08:56:03 CDT 2003
t2 = t + 2592000 #=> Fri May 09 08:56:03 CDT 2003
t2 - t #=> 2592000.0
t2 - 2592000 #=> Wed Apr 09 08:56:03 CDT 2003
Более одного метода удовлетворяет вашему запросу. Вы можете уточнить ваш запрос, выбрав один из следующих методов:
Time#<=>, Time#<=>===Time#_dump===
time._dump => string
Dump time for marshaling.
Time#asctime
[править]time.asctime => string time.ctime => string
Returns a canonical string representation of time.
Time.now.asctime #=> "Wed Apr 9 08:56:03 2003"
Time#ctime
[править]time.asctime => string time.ctime => string
Returns a canonical string representation of time.
Time.now.asctime #=> "Wed Apr 9 08:56:03 2003"
Time#day
[править]time.day => fixnum time.mday => fixnum
Returns the day of the month (1..n) for time.
t = Time.now #=> Wed Apr 09 08:56:03 CDT 2003
t.day #=> 9
t.mday #=> 9
Time#dst?
[править]time.isdst => true or false time.dst? => true or false
Returns true if time occurs during Daylight Saving Time in its time zone.
Time.local(2000, 7, 1).isdst #=> true
Time.local(2000, 1, 1).isdst #=> false
Time.local(2000, 7, 1).dst? #=> true
Time.local(2000, 1, 1).dst? #=> false
Time#eql?
[править]time.eql?(other_time)
Return true if time and other_time are both Time objects with the same seconds and fractional seconds.
Time#getgm
[править]time.getgm => new_time time.getutc => new_time
Returns a new new_time object representing time in UTC.
t = Time.local(2000,1,1,20,15,1) #=> Sat Jan 01 20:15:01 CST 2000
t.gmt? #=> false
y = t.getgm #=> Sun Jan 02 02:15:01 UTC 2000
y.gmt? #=> true
t == y #=> true
Time#getlocal
[править]time.getlocal => new_time
Returns a new new_time object representing time in local time (using the local time zone in effect for this process).
t = Time.gm(2000,1,1,20,15,1) #=> Sat Jan 01 20:15:01 UTC 2000
t.gmt? #=> true
l = t.getlocal #=> Sat Jan 01 14:15:01 CST 2000
l.gmt? #=> false
t == l #=> true
Time#getutc
[править]time.getgm => new_time time.getutc => new_time
Returns a new new_time object representing time in UTC.
t = Time.local(2000,1,1,20,15,1) #=> Sat Jan 01 20:15:01 CST 2000
t.gmt? #=> false
y = t.getgm #=> Sun Jan 02 02:15:01 UTC 2000
y.gmt? #=> true
t == y #=> true
Time#gmt?
[править]time.utc? => true or false time.gmt? => true or false
Returns true if time represents a time in UTC (GMT).
t = Time.now #=> Wed Apr 09 08:56:04 CDT 2003
t.utc? #=> false
t = Time.gm(2000,"jan",1,20,15,1) #=> Sat Jan 01 20:15:01 UTC 2000
t.utc? #=> true
t = Time.now #=> Wed Apr 09 08:56:03 CDT 2003
t.gmt? #=> false
t = Time.gm(2000,1,1,20,15,1) #=> Sat Jan 01 20:15:01 UTC 2000
t.gmt? #=> true
Time#gmt_offset
[править]time.gmt_offset => fixnum time.gmtoff => fixnum time.utc_offset => fixnum
Returns the offset in seconds between the timezone of time and UTC.
t = Time.gm(2000,1,1,20,15,1) #=> Sat Jan 01 20:15:01 UTC 2000
t.gmt_offset #=> 0
l = t.getlocal #=> Sat Jan 01 14:15:01 CST 2000
l.gmt_offset #=> -21600
Time#gmtime
[править]time.gmtime => time time.utc => time
Converts time to UTC (GMT), modifying the receiver.
t = Time.now #=> Wed Apr 09 08:56:03 CDT 2003
t.gmt? #=> false
t.gmtime #=> Wed Apr 09 13:56:03 UTC 2003
t.gmt? #=> true
t = Time.now #=> Wed Apr 09 08:56:04 CDT 2003
t.utc? #=> false
t.utc #=> Wed Apr 09 13:56:04 UTC 2003
t.utc? #=> true
Time#gmtoff
[править]time.gmt_offset => fixnum time.gmtoff => fixnum time.utc_offset => fixnum
Returns the offset in seconds between the timezone of time and UTC.
t = Time.gm(2000,1,1,20,15,1) #=> Sat Jan 01 20:15:01 UTC 2000
t.gmt_offset #=> 0
l = t.getlocal #=> Sat Jan 01 14:15:01 CST 2000
l.gmt_offset #=> -21600
Time#hash
[править]time.hash => fixnum
Return a hash code for this time object.
Time#hour
[править]time.hour => fixnum
Returns the hour of the day (0..23) for time.
t = Time.now #=> Wed Apr 09 08:56:03 CDT 2003
t.hour #=> 8
Time#httpdate
[править]httpdate()
Returns a string which represents the time as rfc1123-date of HTTP-date defined by RFC 2616:
day-of-week, DD month-name CCYY hh:mm:ss GMT
Note that the result is always UTC (GMT).
Time#inspect
[править]time.inspect => string time.to_s => string
Returns a string representing time. Equivalent to calling Time#strftime with a format string of ``%a %b %d %H:%M:%S %Z %Y.
Time.now.to_s #=> "Wed Apr 09 08:56:04 CDT 2003"
Time#isdst
[править]time.isdst => true or false time.dst? => true or false
Returns true if time occurs during Daylight Saving Time in its time zone.
Time.local(2000, 7, 1).isdst #=> true
Time.local(2000, 1, 1).isdst #=> false
Time.local(2000, 7, 1).dst? #=> true
Time.local(2000, 1, 1).dst? #=> false
Time#iso8601
[править]iso8601(fraction_digits=0)
Alias for #xmlschema
Time#localtime
[править]time.localtime => time
Converts time to local time (using the local time zone in effect for this process) modifying the receiver.
t = Time.gm(2000, "jan", 1, 20, 15, 1)
t.gmt? #=> true
t.localtime #=> Sat Jan 01 14:15:01 CST 2000
t.gmt? #=> false
Time#marshal_dump
[править]marshal_dump()
undocumented
Time#marshal_load
[править]marshal_load(p1)
undocumented
Time#mday
[править]time.day => fixnum time.mday => fixnum
Returns the day of the month (1..n) for time.
t = Time.now #=> Wed Apr 09 08:56:03 CDT 2003
t.day #=> 9
t.mday #=> 9
Time#min
[править]time.min => fixnum
Returns the minute of the hour (0..59) for time.
t = Time.now #=> Wed Apr 09 08:56:03 CDT 2003
t.min #=> 56
Time#mon
[править]time.mon => fixnum time.month => fixnum
Returns the month of the year (1..12) for time.
t = Time.now #=> Wed Apr 09 08:56:03 CDT 2003
t.mon #=> 4
t.month #=> 4
Time#month
[править]time.mon => fixnum time.month => fixnum
Returns the month of the year (1..12) for time.
t = Time.now #=> Wed Apr 09 08:56:03 CDT 2003
t.mon #=> 4
t.month #=> 4
Time#rfc2822
[править]rfc2822()
Returns a string which represents the time as date-time defined by RFC 2822:
day-of-week, DD month-name CCYY hh:mm:ss zone
where zone is [+-]hhmm. If self is a UTC time, -0000 is used as zone.
(еще известен как rfc822)
Time#rfc822
[править]rfc822()
Alias for #rfc2822
Time#sec
[править]time.sec => fixnum
Returns the second of the minute (0..60)[Yes, seconds really can range from zero to 60. This allows the system to inject leap seconds every now and then to correct for the fact that years are not really a convenient number of hours long.] for time.
t = Time.now #=> Wed Apr 09 08:56:04 CDT 2003
t.sec #=> 4
Time#strftime
[править]Time.strftime( string ) => string
Formats time according to the directives in the given format string. Any text not listed as a directive will be passed through to the output string. Format meaning:
%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..31)
%H - Hour of the day, 24-hour clock (00..23)
%I - Hour of the day, 12-hour clock (01..12)
%j - Day of the year (001..366)
%m - Month of the year (01..12)
%M - Minute of the hour (00..59)
%p - Meridian indicator (``AM or ``PM)
%S - Second of the minute (00..60)
%U - Week number of the current year,
starting with the first Sunday as the first
day of the first week (00..53)
%W - Week number of the current year,
starting with the first Monday as the first
day of the first week (00..53)
%w - Day of the week (Sunday is 0, 0..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..99)
%Y - Year with century
%Z - Time zone name
%% - Literal ``% character
t = Time.now
t.strftime("Printed on %m/%d/%Y") #=> "Printed on 04/09/2003"
t.strftime("at %I:%M%p") #=> "at 08:56AM"
Time#succ
[править]time.succ => new_time
Return a new time object, one second later than time.
Time#to_a
[править]time.to_a => array
Returns a ten-element array of values for time: {[ sec, min, hour, day, month, year, wday, yday, isdst, zone ]}. See the individual methods for an explanation of the valid ranges of each value. The ten elements can be passed directly to Time::utc or Time::local to create a new Time.
now = Time.now #=> Wed Apr 09 08:56:04 CDT 2003
t = now.to_a #=> [4, 56, 8, 9, 4, 2003, 3, 99, true, "CDT"]
Time#to_f
[править]time.to_f => float
Returns the value of time as a floating point number of seconds since epoch.
t = Time.now
"%10.5f" % t.to_f #=> "1049896564.13654"
t.to_i #=> 1049896564
Time#to_i
[править]time.to_i => int time.tv_sec => int
Returns the value of time as an integer number of seconds since epoch.
t = Time.now
"%10.5f" % t.to_f #=> "1049896564.17839"
t.to_i #=> 1049896564
Time#to_s
[править]time.inspect => string time.to_s => string
Returns a string representing time. Equivalent to calling Time#strftime with a format string of ``%a %b %d %H:%M:%S %Z %Y.
Time.now.to_s #=> "Wed Apr 09 08:56:04 CDT 2003"
Time#to_yaml
[править] to_yaml( opts = {} )
(нет описания...)
Time#tv_sec
[править]time.to_i => int time.tv_sec => int
Returns the value of time as an integer number of seconds since epoch.
t = Time.now
"%10.5f" % t.to_f #=> "1049896564.17839"
t.to_i #=> 1049896564
Time#tv_usec
[править]time.usec => int time.tv_usec => int
Returns just the number of microseconds for time.
t = Time.now #=> Wed Apr 09 08:56:04 CDT 2003
"%10.6f" % t.to_f #=> "1049896564.259970"
t.usec #=> 259970
Time#usec
[править]time.usec => int time.tv_usec => int
Returns just the number of microseconds for time.
t = Time.now #=> Wed Apr 09 08:56:04 CDT 2003
"%10.6f" % t.to_f #=> "1049896564.259970"
t.usec #=> 259970
Time#utc
[править]time.gmtime => time time.utc => time
Converts time to UTC (GMT), modifying the receiver.
t = Time.now #=> Wed Apr 09 08:56:03 CDT 2003
t.gmt? #=> false
t.gmtime #=> Wed Apr 09 13:56:03 UTC 2003
t.gmt? #=> true
t = Time.now #=> Wed Apr 09 08:56:04 CDT 2003
t.utc? #=> false
t.utc #=> Wed Apr 09 13:56:04 UTC 2003
t.utc? #=> true
Time#utc?
[править]time.utc? => true or false time.gmt? => true or false
Returns true if time represents a time in UTC (GMT).
t = Time.now #=> Wed Apr 09 08:56:04 CDT 2003
t.utc? #=> false
t = Time.gm(2000,"jan",1,20,15,1) #=> Sat Jan 01 20:15:01 UTC 2000
t.utc? #=> true
t = Time.now #=> Wed Apr 09 08:56:03 CDT 2003
t.gmt? #=> false
t = Time.gm(2000,1,1,20,15,1) #=> Sat Jan 01 20:15:01 UTC 2000
t.gmt? #=> true
Time#utc_offset
[править]time.gmt_offset => fixnum time.gmtoff => fixnum time.utc_offset => fixnum
Returns the offset in seconds between the timezone of time and UTC.
t = Time.gm(2000,1,1,20,15,1) #=> Sat Jan 01 20:15:01 UTC 2000
t.gmt_offset #=> 0
l = t.getlocal #=> Sat Jan 01 14:15:01 CST 2000
l.gmt_offset #=> -21600
Time#wday
[править]time.wday => fixnum
Returns an integer representing the day of the week, 0..6, with Sunday == 0.
t = Time.now #=> Wed Apr 09 08:56:04 CDT 2003
t.wday #=> 3
Time#xmlschema
[править]xmlschema(fraction_digits=0)
Returns a string which represents the time as dateTime defined by XML Schema:
CCYY-MM-DDThh:mm:ssTZD
CCYY-MM-DDThh:mm:ss.sssTZD
where TZD is Z or [+-]hh:mm. If self is a UTC time, Z is used as TZD. [+-]hh:mm is used otherwise. fractional_seconds specifies a number of digits of fractional seconds. Its default value is 0.
(еще известен как iso8601)
Time#yday
[править]time.yday => fixnum
Returns an integer representing the day of the year, 1..366.
t = Time.now #=> Wed Apr 09 08:56:04 CDT 2003
t.yday #=> 99
Time#year
[править]time.year => fixnum
Returns the year for time (including the century).
t = Time.now #=> Wed Apr 09 08:56:04 CDT 2003
t.year #=> 2003
Time#zone
[править]time.zone => string
Возвращает наименовние часового поиса. В Ruby 1.8 возвращает UTC , а не GMT для времени UTC.
t = Time.gm(2000, "jan", 1, 20, 15, 1)
t.zone #=> "UTC"
t = Time.local(2000, "jan", 1, 20, 15, 1)
t.zone #=> "CST"
Пример Ruby 2.0
t=Time.new
t.zone #=> OMST