Results for: "pstore"

Start a document emission with YAML version, tags, and an implicit start.

See Psych::Handler#start_document

Start emitting a sequence with anchor, a tag, implicit sequence start and end, along with style.

See Psych::Handler#start_sequence

Start emitting a YAML map with anchor, tag, an implicit start and end, and style.

See Psych::Handler#start_mapping

Returns the raw error code indicating the cause of the hostname resolution failure.

begin
  Addrinfo.getaddrinfo("ruby-lang.org", nil)
rescue Socket::ResolutionError => e
  if e.error_code == Socket::EAI_AGAIN
    puts "Temporary failure in name resolution."
  end
end

Note that error codes depend on the operating system.

Read a REG_SZ or REG_EXPAND_SZ registry value named name.

If the value type is REG_EXPAND_SZ, environment variables are replaced. Unless the value type is REG_SZ or REG_EXPAND_SZ, TypeError is raised.

Read a REG_SZ(read_s), REG_DWORD(read_i), or REG_BINARY(read_bin) registry value named name.

If the values type does not match, TypeError is raised.

Returns the total bytes of the input data to the stream. FIXME

Returns the total bytes of the output data from the stream. FIXME

Same as IO.

Returns original filename recorded in the gzip file header, or nil if original filename is not present.

Specify the original name (str) in the gzip header.

Returns the major part of File_Stat#dev or nil.

File.stat("/dev/fd1").dev_major   #=> 2
File.stat("/dev/tty").dev_major   #=> 5

Returns the minor part of File_Stat#dev or nil.

File.stat("/dev/fd1").dev_minor   #=> 1
File.stat("/dev/tty").dev_minor   #=> 0

Returns the major part of File_Stat#rdev or nil.

File.stat("/dev/fd1").rdev_major   #=> 2
File.stat("/dev/tty").rdev_major   #=> 5

Returns the minor part of File_Stat#rdev or nil.

File.stat("/dev/fd1").rdev_minor   #=> 1
File.stat("/dev/tty").rdev_minor   #=> 0

Returns true if stat is writable by the real user id of this process.

File.stat("testfile").writable_real?   #=> true

If stat is writable by others, returns an integer representing the file permission bits of stat. Returns nil otherwise. The meaning of the bits is platform dependent; on Unix systems, see stat(2).

m = File.stat("/tmp").world_writable?         #=> 511
sprintf("%o", m)                              #=> "777"

Same as executable?, but tests using the real owner of the process.

Read a chunk or all of the buffer into a string, in the specified encoding. If no encoding is provided Encoding::BINARY is used.

buffer = IO::Buffer.for('test')
buffer.get_string
# => "test"
buffer.get_string(2)
# => "st"
buffer.get_string(2, 1)
# => "s"

Efficiently copy from a source String into the buffer, at offset using memmove.

buf = IO::Buffer.new(8)
# =>
# #<IO::Buffer 0x0000557412714a20+8 INTERNAL>
# 0x00000000  00 00 00 00 00 00 00 00                         ........

# set buffer starting from offset 1, take 2 bytes starting from string's
# second
buf.set_string('test', 1, 2, 1)
# => 2
buf
# =>
# #<IO::Buffer 0x0000557412714a20+8 INTERNAL>
# 0x00000000  00 65 73 00 00 00 00 00                         .es.....

See also copy for examples of how buffer writing might be used for changing associated strings and files.

Returns serialized iseq binary format data as a String object. A corresponding iseq object is created by RubyVM::InstructionSequence.load_from_binary() method.

String extra_data will be saved with binary data. You can access this data with RubyVM::InstructionSequence.load_from_binary_extra_data(binary).

Note that the translated binary data is not portable. You can not move this binary data to another machine. You can not use the binary data which is created by another version/another architecture of Ruby.

Returns the number of the first source line where the instruction sequence was loaded from.

For example, using irb:

iseq = RubyVM::InstructionSequence.compile('num = 1 + 2')
#=> <RubyVM::InstructionSequence:<compiled>@<compiled>>
iseq.first_lineno
#=> 1