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Makes existing class methods private. Often used to hide the default constructor new.

String arguments are converted to symbols. An Array of Symbols and/or Strings is also accepted.

class SimpleSingleton  # Not thread safe
  private_class_method :new
  def SimpleSingleton.create(*args, &block)
    @me = new(*args, &block) if ! @me
    @me
  end
end

Returns IO instance tied to ARGF for writing if inplace mode is enabled.

Returns the value of the local variable symbol.

def foo
  a = 1
  binding.local_variable_get(:a) #=> 1
  binding.local_variable_get(:b) #=> NameError
end

This method is the short version of the following code:

binding.eval("#{symbol}")

Set local variable named symbol as obj.

def foo
  a = 1
  bind = binding
  bind.local_variable_set(:a, 2) # set existing local variable `a'
  bind.local_variable_set(:b, 3) # create new local variable `b'
                                 # `b' exists only in binding

  p bind.local_variable_get(:a)  #=> 2
  p bind.local_variable_get(:b)  #=> 3
  p a                            #=> 2
  p b                            #=> NameError
end

This method behaves similarly to the following code:

binding.eval("#{symbol} = #{obj}")

if obj can be dumped in Ruby code.

Returns true if a local variable symbol exists.

def foo
  a = 1
  binding.local_variable_defined?(:a) #=> true
  binding.local_variable_defined?(:b) #=> false
end

This method is the short version of the following code:

binding.eval("defined?(#{symbol}) == 'local-variable'")

Returns the value of a thread local variable that has been set. Note that these are different than fiber local values. For fiber local values, please see Thread#[] and Thread#[]=.

Thread local values are carried along with threads, and do not respect fibers. For example:

Thread.new {
  Thread.current.thread_variable_set("foo", "bar") # set a thread local
  Thread.current["foo"] = "bar"                    # set a fiber local

  Fiber.new {
    Fiber.yield [
      Thread.current.thread_variable_get("foo"), # get the thread local
      Thread.current["foo"],                     # get the fiber local
    ]
  }.resume
}.join.value # => ['bar', nil]

The value “bar” is returned for the thread local, where nil is returned for the fiber local. The fiber is executed in the same thread, so the thread local values are available.

Sets a thread local with key to value. Note that these are local to threads, and not to fibers. Please see Thread#thread_variable_get and Thread#[] for more information.

Enable to measure GC time. You can get the result with GC.stat(:time). Note that GC time measurement can cause some performance overhead.

Return measure_total_time flag (default: true). Note that measurement can affect the application performance.

Returns the value of Gem.source_date_epoch_string, as a Time object.

This is used throughout RubyGems for enabling reproducible builds.

Securely removes the entry given by path, which should be the entry for a regular file, a symbolic link, or a directory.

Argument path should be interpretable as a path.

Avoids a local vulnerability that can exist in certain circumstances; see Avoiding the TOCTTOU Vulnerability.

Optional argument force specifies whether to ignore raised exceptions of StandardError and its descendants.

Related: methods for deleting.

Securely removes the entry given by path, which should be the entry for a regular file, a symbolic link, or a directory.

Argument path should be interpretable as a path.

Avoids a local vulnerability that can exist in certain circumstances; see Avoiding the TOCTTOU Vulnerability.

Optional argument force specifies whether to ignore raised exceptions of StandardError and its descendants.

Related: methods for deleting.

Mirror the Prism.parse_file_failure? API by using the serialization API.

SyntaxSuggest.use_prism_parser? [Private]

Tells us if the prism parser is available for use or if we should fallback to ‘Ripper`

@@foo += bar ^^^^^^^^^^^^

@@foo &&= bar ^^^^^^^^^^^^^

@@foo ||= bar ^^^^^^^^^^^^^

$foo += bar ^^^^^^^^^^^

$foo &&= bar ^^^^^^^^^^^^

$foo ||= bar ^^^^^^^^^^^^

@foo += bar ^^^^^^^^^^^

@foo &&= bar ^^^^^^^^^^^^

@foo ||= bar ^^^^^^^^^^^^

foo += bar ^^^^^^^^^^