Executes the generated ERB code to produce a completed template, returning the results of that code. (See ERB::new for details on how this process can be affected by safe_level.)
b accepts a Binding object which is used to set the context of code evaluation.
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.
Returns the prefix length in bits for the ipaddr.
Sets the prefix length in bits
Sets the log level; returns severity. See Log Level.
Argument severity may be an integer, a string, or a symbol:
logger.level = Logger::ERROR # => 3 logger.level = 3 # => 3 logger.level = 'error' # => "error" logger.level = :error # => :error
Logger#sev_threshold= is an alias for Logger#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"]
Directs to reject specified class argument.
t
Argument class specifier, any object including Class.
reject(t)
Release code
Returns version string from program_name, version and release.
Returns an array of member names of the data class:
Measure = Data.define(:amount, :unit) Measure.members # => [:amount, :unit]
Returns the member names from self as an array:
Measure = Data.define(:amount, :unit) distance = Measure[10, 'km'] distance.members #=> [:amount, :unit]
Returns the regexp that produced the match:
m = /a.*b/.match("abc") # => #<MatchData "ab"> m.regexp # => /a.*b/
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.
This says “you can break a line here if necessary”, and a width-column text sep is inserted if a line is not broken at the point.
If sep is not specified, “ ” is used.
If width is not specified, sep.length is used. You will have to specify this when sep is a multibyte character, for example.
Looks up the first IP address for name.
Looks up all IP address for name.
Looks up the first IP address for name.
Looks up all IP address for name.
Creates a file in the underlying file system; returns a new File object based on that file.
With no block given and no arguments, creates and returns file whose:
Directory is the system temporary directory (system-dependent).
Generated filename is unique in that directory.
Permissions are 0600; see File Permissions.
Mode is 'w+' (read/write mode, positioned at the end).
With no block, the file is not removed automatically, and so should be explicitly removed.
Example:
f = Tempfile.create # => #<File:/tmp/20220505-9795-17ky6f6> f.class # => File f.path # => "/tmp/20220505-9795-17ky6f6" f.stat.mode.to_s(8) # => "100600" File.exist?(f.path) # => true File.unlink(f.path) File.exist?(f.path) # => false
Argument basename, if given, may be one of:
A string: the generated filename begins with basename:
Tempfile.create('foo') # => #<File:/tmp/foo20220505-9795-1gok8l9>
An array of two strings [prefix, suffix]: the generated filename begins with prefix and ends with suffix:
Tempfile.create(%w/foo .jpg/) # => #<File:/tmp/foo20220505-17839-tnjchh.jpg>
With arguments basename and tmpdir, the file is created in directory tmpdir:
Tempfile.create('foo', '.') # => #<File:./foo20220505-9795-1emu6g8>
Keyword arguments mode and options are passed directly to method File.open:
The value given with mode must be an integer, and may be expressed as the logical OR of constants defined in File::Constants.
For options, see Open Options.
With a block given, creates the file as above, passes it to the block, and returns the block’s value; before the return, the file object is closed and the underlying file is removed:
Tempfile.create {|file| file.path } # => "/tmp/20220505-9795-rkists"
Related: Tempfile.new.
Checks if the object is shareable by ractors.
Ractor.shareable?(1) #=> true -- numbers and other immutable basic values are frozen Ractor.shareable?('foo') #=> false, unless the string is frozen due to # freeze_string_literals: true Ractor.shareable?('foo'.freeze) #=> true
See also the “Shareable and unshareable objects” section in the Ractor class docs.