This method must be overridden by subclasses and change the object delegate to obj.
Changes the delegate object to obj.
It’s important to note that this does not cause SimpleDelegator’s methods to change. Because of this, you probably only want to change delegation to objects of the same type as the original delegate.
Here’s an example of changing the delegation object.
names = SimpleDelegator.new(%w{James Edward Gray II}) puts names[1] # => Edward names.__setobj__(%w{Gavin Sinclair}) puts names[1] # => Sinclair
Sets the ordering; see Ordering; returns the new ordering.
If the given ordering is PERMUTE and environment variable POSIXLY_CORRECT is defined, sets the ordering to REQUIRE_ORDER; otherwise sets the ordering to ordering:
options = GetoptLong.new options.ordering == GetoptLong::PERMUTE # => true options.ordering = GetoptLong::RETURN_IN_ORDER options.ordering == GetoptLong::RETURN_IN_ORDER # => true ENV['POSIXLY_CORRECT'] = 'true' options.ordering = GetoptLong::PERMUTE options.ordering == GetoptLong::REQUIRE_ORDER # => true
Raises an exception if ordering is invalid.
Terminate option processing; returns nil if processing has already terminated; otherwise returns self.
Returns true if option processing has terminated, false otherwise.
Convert a network byte ordered string form of an IP address into human readable form.
Returns a network byte ordered string form of the IP address.
Returns true if the ipaddr is a loopback address.
Returns a new ipaddr built by converting the IPv6 address into a native IPv4 address. If the IP address is not an IPv4-mapped or IPv4-compatible IPv6 address, returns self.
Set +@addr+, the internal stored ip address, to given addr. The parameter addr is validated using the first family member, which is Socket::AF_INET or Socket::AF_INET6.
Returns the bound receiver of the binding object.
Returns true if the log level allows entries with severity Logger::WARN to be written, false otherwise. See Log Level.
Sets the log level to Logger::WARN. See Log Level.
Returns true if the log level allows entries with severity Logger::ERROR to be written, false otherwise. See Log Level.
Sets the log level to Logger::ERROR. See Log Level.
Sets the logger’s output stream:
If logdev is nil, reopens the current output stream.
If logdev is a filepath, opens the indicated file for append.
If logdev is an IO stream (usually $stdout, $stderr, or an open File object), opens the stream for append.
Example:
logger = Logger.new('t.log') logger.add(Logger::ERROR, 'one') logger.close logger.add(Logger::ERROR, 'two') # Prints 'log writing failed. closed stream' logger.reopen logger.add(Logger::ERROR, 'three') logger.close File.readlines('t.log') # => # ["# Logfile created on 2022-05-12 14:21:19 -0500 by logger.rb/v1.5.0\n", # "E, [2022-05-12T14:21:27.596726 #22428] ERROR -- : one\n", # "E, [2022-05-12T14:23:05.847241 #22428] ERROR -- : three\n"]
Equivalent to calling add with severity Logger::WARN.
Equivalent to calling add with severity Logger::ERROR.
Closes the logger; returns nil:
logger = Logger.new('t.log') logger.close # => nil logger.info('foo') # Prints "log writing failed. closed stream"
Related: Logger#reopen.
Returns the values in self as an array, to use in pattern matching:
Measure = Data.define(:amount, :unit) distance = Measure[10, 'km'] distance.deconstruct #=> [10, "km"] # usage case distance in n, 'km' # calls #deconstruct underneath puts "It is #{n} kilometers away" else puts "Don't know how to handle it" end # prints "It is 10 kilometers away"
Or, with checking the class, too:
case distance in Measure(n, 'km') puts "It is #{n} kilometers away" # ... end
Returns a 2-element array containing the beginning and ending offsets (in characters) of the specified match.
When non-negative integer argument n is given, returns the starting and ending offsets of the nth match:
m = /(.)(.)(\d+)(\d)/.match("THX1138.") # => #<MatchData "HX1138" 1:"H" 2:"X" 3:"113" 4:"8"> m[0] # => "HX1138" m.offset(0) # => [1, 7] m[3] # => "113" m.offset(3) # => [3, 6] m = /(т)(е)(с)/.match('тест') # => #<MatchData "тес" 1:"т" 2:"е" 3:"с"> m[0] # => "тес" m.offset(0) # => [0, 3] m[3] # => "с" m.offset(3) # => [2, 3]
When string or symbol argument name is given, returns the starting and ending offsets for the named match:
m = /(?<foo>.)(.)(?<bar>.)/.match("hoge") # => #<MatchData "hog" foo:"h" bar:"g"> m[:foo] # => "h" m.offset('foo') # => [0, 1] m[:bar] # => "g" m.offset(:bar) # => [2, 3]
Related: MatchData#byteoffset, MatchData#begin, MatchData#end.
Returns a two-element array containing the beginning and ending byte-based offsets of the nth match. n can be a string or symbol to reference a named capture.
m = /(.)(.)(\d+)(\d)/.match("THX1138.") m.byteoffset(0) #=> [1, 7] m.byteoffset(4) #=> [6, 7] m = /(?<foo>.)(.)(?<bar>.)/.match("hoge") p m.byteoffset(:foo) #=> [0, 1] p m.byteoffset(:bar) #=> [2, 3]
Returns the array of captures, which are all matches except m[0]:
m = /(.)(.)(\d+)(\d)/.match("THX1138.") # => #<MatchData "HX1138" 1:"H" 2:"X" 3:"113" 4:"8"> m[0] # => "HX1138" m.captures # => ["H", "X", "113", "8"]
Related: MatchData.to_a.
Returns the array of captures, which are all matches except m[0]:
m = /(.)(.)(\d+)(\d)/.match("THX1138.") # => #<MatchData "HX1138" 1:"H" 2:"X" 3:"113" 4:"8"> m[0] # => "HX1138" m.captures # => ["H", "X", "113", "8"]
Related: MatchData.to_a.