Results for: "uri"

Module#remove_class_variable

Removes the definition of the sym, returning that constant’s value.

class Dummy
  @@var = 99
  puts @@var
  remove_class_variable(:@@var)
  p(defined? @@var)
end

produces:

99
nil

Returns the value of the given class variable (or throws a NameError exception). The @@ part of the variable name should be included for regular class variables. String arguments are converted to symbols.

class Fred
  @@foo = 99
end
Fred.class_variable_get(:@@foo)     #=> 99

Module#class_variable_set

Sets the class variable named by symbol to the given object. If the class variable name is passed as a string, that string is converted to a symbol.

class Fred
  @@foo = 99
  def foo
    @@foo
  end
end
Fred.class_variable_set(:@@foo, 101)     #=> 101
Fred.new.foo                             #=> 101

Module#class_variable_defined?

Returns true if the given class variable is defined in obj. String arguments are converted to symbols.

class Fred
  @@foo = 99
end
Fred.class_variable_defined?(:@@foo)    #=> true
Fred.class_variable_defined?(:@@bar)    #=> false

Module#private_method_defined?

Returns true if the named private method is defined by _ mod_ (or its included modules and, if mod is a class, its ancestors). String arguments are converted to symbols.

module A
  def method1()  end
end
class B
  private
  def method2()  end
end
class C < B
  include A
  def method3()  end
end

A.method_defined? :method1            #=> true
C.private_method_defined? "method1"   #=> false
C.private_method_defined? "method2"   #=> true
C.method_defined? "method2"           #=> false

Module#private_class_method

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

String arguments are converted to symbols.

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

Integer::from_prime_division

Re-composes a prime factorization and returns the product.

See Prime#int_from_prime_division for more details.

WIN32OLE_METHOD#return_type_detail

Returns detail information of return value type of method. The information is array.

tobj = WIN32OLE_TYPE.new('Microsoft Excel 9.0 Object Library', 'Workbooks')
method = WIN32OLE_METHOD.new(tobj, 'Add')
p method.return_type_detail # => ["PTR", "USERDEFINED", "Workbook"]

WIN32OLE_TYPE#source_ole_types

Returns the array of WIN32OLE_TYPE object which is implemented by the WIN32OLE_TYPE object and having IMPLTYPEFLAG_FSOURCE.

tobj = WIN32OLE_TYPE.new('Microsoft Internet Controls', "InternetExplorer")
p tobj.source_ole_types
# => [#<WIN32OLE_TYPE:DWebBrowserEvents2>, #<WIN32OLE_TYPE:DWebBrowserEvents>]

WIN32OLE_TYPE#default_event_sources

Returns the array of WIN32OLE_TYPE object which is implemented by the WIN32OLE_TYPE object and having IMPLTYPEFLAG_FSOURCE and IMPLTYPEFLAG_FDEFAULT.

tobj = WIN32OLE_TYPE.new('Microsoft Internet Controls', "InternetExplorer")
p tobj.default_event_sources  # => [#<WIN32OLE_TYPE:DWebBrowserEvents2>]

Symbol::from_prime_division

Re-composes a prime factorization and returns the product.

See Prime#int_from_prime_division for more details.

RDocTask#clobber_task_description

Task description for the clobber rdoc task or its renamed equivalent

RDocTask#rdoc_task_description

Task description for the rdoc task or its renamed equivalent

RDocTask#rerdoc_task_description

Task description for the rerdoc task or its renamed description

Thread#thread_variable_get

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.

Thread#thread_variable_set

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.

Binding#local_variable_get

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}")

Binding#local_variable_set

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.

Binding#local_variable_defined?

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'")

Kernel#gem_original_require

The Kernel#require from before RubyGems was loaded.

Psych::add_private_type

No documentation available

GC::verify_internal_consistency

Verify internal consistency.

This method is implementation specific. Now this method checks generational consistency if RGenGC is supported.

FileUtils#remove_entry_secure

This method removes a file system entry path. path shall be a regular file, a directory, or something. If path is a directory, remove it recursively. This method is required to avoid TOCTTOU (time-of-check-to-time-of-use) local security vulnerability of rm_r. rm_r causes security hole when:

* Parent directory is world writable (including /tmp).
* Removing directory tree includes world writable directory.
* The system has symbolic link.

To avoid this security hole, this method applies special preprocess. If path is a directory, this method chown(2) and chmod(2) all removing directories. This requires the current process is the owner of the removing whole directory tree, or is the super user (root).

WARNING: You must ensure that ALL parent directories cannot be moved by other untrusted users. For example, parent directories should not be owned by untrusted users, and should not be world writable except when the sticky bit set.

WARNING: Only the owner of the removing directory tree, or Unix super user (root) should invoke this method. Otherwise this method does not work.

For details of this security vulnerability, see Perl’s case:

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0448
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0452

For fileutils.rb, this vulnerability is reported in [ruby-dev:26100].

FileUtils::remove_entry_secure