Results for: "OptionParser"

Returns true if stat has its sticky bit set, false if it doesn’t or if the operating system doesn’t support this feature.

File.stat("testfile").sticky?   #=> false

Returns true if key is registered

Returns the instruction sequence as a String in human readable form.

puts RubyVM::InstructionSequence.compile('1 + 2').disasm

Produces:

== disasm: <RubyVM::InstructionSequence:<compiled>@<compiled>>==========
0000 trace            1                                               (   1)
0002 putobject        1
0004 putobject        2
0006 opt_plus         <ic:1>
0008 leave

Returns the path of this instruction sequence.

<compiled> if the iseq was evaluated from a string.

For example, using irb:

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

Using ::compile_file:

# /tmp/method.rb
def hello
  puts "hello, world"
end

# in irb
> iseq = RubyVM::InstructionSequence.compile_file('/tmp/method.rb')
> iseq.path #=> /tmp/method.rb

Takes body, a Method or Proc object, and returns a String with the human readable instructions for body.

For a Method object:

# /tmp/method.rb
def hello
  puts "hello, world"
end

puts RubyVM::InstructionSequence.disasm(method(:hello))

Produces:

== disasm: <RubyVM::InstructionSequence:hello@/tmp/method.rb>============
0000 trace            8                                               (   1)
0002 trace            1                                               (   2)
0004 putself
0005 putstring        "hello, world"
0007 send             :puts, 1, nil, 8, <ic:0>
0013 trace            16                                              (   3)
0015 leave                                                            (   2)

For a Proc:

# /tmp/proc.rb
p = proc { num = 1 + 2 }
puts RubyVM::InstructionSequence.disasm(p)

Produces:

== disasm: <RubyVM::InstructionSequence:block in <main>@/tmp/proc.rb>===
== catch table
| catch type: redo   st: 0000 ed: 0012 sp: 0000 cont: 0000
| catch type: next   st: 0000 ed: 0012 sp: 0000 cont: 0012
|------------------------------------------------------------------------
local table (size: 2, argc: 0 [opts: 0, rest: -1, post: 0, block: -1] s1)
[ 2] num
0000 trace            1                                               (   1)
0002 putobject        1
0004 putobject        2
0006 opt_plus         <ic:1>
0008 dup
0009 setlocal         num, 0
0012 leave

Set whether the Cookie is a secure cookie or not.

val must be a boolean.

Set whether the Cookie is a httponly cookie or not.

val must be a boolean.

Store session data on the server and close the session storage. For some session storage types, this is a no-op.

Returns true if name is a header for this row, and false otherwise.

Is uri the URI for this server?

Return an DRb::DRbSSLSocket instance as a client-side connection, with the SSL connected. This is called from DRb::start_service or while connecting to a remote object:

DRb.start_service 'drbssl://localhost:0', front, config

uri is the URI we are connected to, 'drbssl://localhost:0' above, config is our configuration. Either a Hash or DRb::DRbSSLSocket::SSLConfig

Returns an array of the eigenvectors

Symmetric Householder reduction to tridiagonal form.

Symmetric tridiagonal QL algorithm.

Returns true if U, and hence A, is singular.

A synonym for FTP.new, but with a mandatory host parameter.

If a block is given, it is passed the FTP object, which will be closed when the block finishes, or when an exception is raised.

A setter to toggle transfers in binary mode. newmode is either true or false

Establishes an FTP connection to host, optionally overriding the default port. If the environment variable SOCKS_SERVER is set, sets up the connection through a SOCKS proxy. Raises an exception (typically Errno::ECONNREFUSED) if the connection cannot be established.

Sends a command and returns the response.

Puts the connection into binary (image) mode, issues the given command, and fetches the data returned, passing it to the associated block in chunks of blocksize characters. Note that cmd is a server command (such as “RETR myfile”).