Returns true if self is a Wednesday, false otherwise.
Returns true if self is a Thursday, false otherwise.
Returns true if self is a Friday, 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.
Equivalent to Date#new_start with argument Date::ITALY.
Returns the integer day of the month for self, in range (1..31):
t = Time.new(2000, 1, 2, 3, 4, 5, 6) # => 2000-01-02 03:04:05 +000006 t.mday # => 2
Returns the integer day of the month for self, in range (1..31):
t = Time.new(2000, 1, 2, 3, 4, 5, 6) # => 2000-01-02 03:04:05 +000006 t.mday # => 2
Returns the integer day of the week for self, in range (0..6), with Sunday as zero.
t = Time.new(2000, 1, 2, 3, 4, 5, 6) # => 2000-01-02 03:04:05 +000006 t.wday # => 0 t.sunday? # => true
Returns the integer day of the year of self, in range (1..366).
Time.new(2000, 1, 1).yday # => 1 Time.new(2000, 12, 31).yday # => 366
Returns true if self represents a Sunday, false otherwise:
t = Time.utc(2000, 1, 2) # => 2000-01-02 00:00:00 UTC t.sunday? # => true
Related: Time#monday?, Time#tuesday?, Time#wednesday?.
Returns true if self represents a Monday, false otherwise:
t = Time.utc(2000, 1, 3) # => 2000-01-03 00:00:00 UTC t.monday? # => true
Related: Time#tuesday?, Time#wednesday?, Time#thursday?.
Returns true if self represents a Tuesday, false otherwise:
t = Time.utc(2000, 1, 4) # => 2000-01-04 00:00:00 UTC t.tuesday? # => true
Related: Time#wednesday?, Time#thursday?, Time#friday?.
Returns true if self represents a Wednesday, false otherwise:
t = Time.utc(2000, 1, 5) # => 2000-01-05 00:00:00 UTC t.wednesday? # => true
Related: Time#thursday?, Time#friday?, Time#saturday?.
Returns true if self represents a Thursday, false otherwise:
t = Time.utc(2000, 1, 6) # => 2000-01-06 00:00:00 UTC t.thursday? # => true
Related: Time#friday?, Time#saturday?, Time#sunday?.
Returns true if self represents a Friday, false otherwise:
t = Time.utc(2000, 1, 7) # => 2000-01-07 00:00:00 UTC t.friday? # => true
Related: Time#saturday?, Time#sunday?, Time#monday?.
Returns a new Time object based on the given arguments.
Required argument time may be either of:
A Time object, whose value is the basis for the returned time; also influenced by optional keyword argument in: (see below).
A numeric number of Epoch seconds for the returned time.
Examples:
t = Time.new(2000, 12, 31, 23, 59, 59) # => 2000-12-31 23:59:59 -0600 secs = t.to_i # => 978328799 Time.at(secs) # => 2000-12-31 23:59:59 -0600 Time.at(secs + 0.5) # => 2000-12-31 23:59:59.5 -0600 Time.at(1000000000) # => 2001-09-08 20:46:40 -0500 Time.at(0) # => 1969-12-31 18:00:00 -0600 Time.at(-1000000000) # => 1938-04-24 17:13:20 -0500
Optional numeric argument subsec and optional symbol argument units work together to specify subseconds for the returned time; argument units specifies the units for subsec:
:millisecond: subsec in milliseconds:
Time.at(secs, 0, :millisecond) # => 2000-12-31 23:59:59 -0600 Time.at(secs, 500, :millisecond) # => 2000-12-31 23:59:59.5 -0600 Time.at(secs, 1000, :millisecond) # => 2001-01-01 00:00:00 -0600 Time.at(secs, -1000, :millisecond) # => 2000-12-31 23:59:58 -0600
:microsecond or :usec: subsec in microseconds:
Time.at(secs, 0, :microsecond) # => 2000-12-31 23:59:59 -0600 Time.at(secs, 500000, :microsecond) # => 2000-12-31 23:59:59.5 -0600 Time.at(secs, 1000000, :microsecond) # => 2001-01-01 00:00:00 -0600 Time.at(secs, -1000000, :microsecond) # => 2000-12-31 23:59:58 -0600
:nanosecond or :nsec: subsec in nanoseconds:
Time.at(secs, 0, :nanosecond) # => 2000-12-31 23:59:59 -0600 Time.at(secs, 500000000, :nanosecond) # => 2000-12-31 23:59:59.5 -0600 Time.at(secs, 1000000000, :nanosecond) # => 2001-01-01 00:00:00 -0600 Time.at(secs, -1000000000, :nanosecond) # => 2000-12-31 23:59:58 -0600
Optional keyword argument +in: zone specifies the timezone for the returned time:
Time.at(secs, in: '+12:00') # => 2001-01-01 17:59:59 +1200 Time.at(secs, in: '-12:00') # => 2000-12-31 17:59:59 -1200
For the forms of argument zone, see Timezone Specifiers.
Returns pathname configuration variable using fpathconf().
name should be a constant under Etc which begins with PC_.
The return value is an integer or nil. nil means indefinite limit. (fpathconf() returns -1 but errno is not set.)
require 'etc' IO.pipe {|r, w| p w.pathconf(Etc::PC_PIPE_BUF) #=> 4096 }
Returns true if the stream is associated with a terminal device (tty), false otherwise:
f = File.new('t.txt').isatty #=> false f.close f = File.new('/dev/tty').isatty #=> true f.close
Returns the path associated with the IO, or nil if there is no path associated with the IO. It is not guaranteed that the path exists on the filesystem.
$stdin.path # => "<STDIN>" File.open("testfile") {|f| f.path} # => "testfile"
With no block given, returns the MatchData object that describes the match, if any, or nil if none; the search begins at the given character offset in string:
/abra/.match('abracadabra') # => #<MatchData "abra"> /abra/.match('abracadabra', 4) # => #<MatchData "abra"> /abra/.match('abracadabra', 8) # => nil /abra/.match('abracadabra', 800) # => nil string = "\u{5d0 5d1 5e8 5d0}cadabra" /abra/.match(string, 7) #=> #<MatchData "abra"> /abra/.match(string, 8) #=> nil /abra/.match(string.b, 8) #=> #<MatchData "abra">
With a block given, calls the block if and only if a match is found; returns the block’s value:
/abra/.match('abracadabra') {|matchdata| p matchdata } # => #<MatchData "abra"> /abra/.match('abracadabra', 4) {|matchdata| p matchdata } # => #<MatchData "abra"> /abra/.match('abracadabra', 8) {|matchdata| p matchdata } # => nil /abra/.match('abracadabra', 8) {|marchdata| fail 'Cannot happen' } # => nil
Output (from the first two blocks above):
#<MatchData "abra"> #<MatchData "abra"> /(.)(.)(.)/.match("abc")[2] # => "b" /(.)(.)/.match("abc", 1)[2] # => "c"
Returns true or false to indicate whether the regexp is matched or not without updating $~ and other related variables. If the second parameter is present, it specifies the position in the string to begin the search.
/R.../.match?("Ruby") # => true /R.../.match?("Ruby", 1) # => false /P.../.match?("Ruby") # => false $& # => nil
Returns a new set that is a copy of the set, flattening each containing set recursively.
Equivalent to Set#flatten, but replaces the receiver with the result in place. Returns nil if no modifications were made.
Equivalent to self.to_s.match, including possible updates to global variables; see String#match.
Equivalent to sym.to_s.match?; see String#match.