Returns true if the file is a character device, false if it isn’t or if the operating system doesn’t support this feature.
File.stat("/dev/tty").chardev? #=> true
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
Symmetric Householder reduction to tridiagonal form.
Symmetric tridiagonal QL algorithm.
Returns true if U, and hence A, is singular.
Releases the lock held in the associated monitor and waits; reacquires the lock on wakeup.
If timeout is given, this method returns after timeout seconds passed, even if no other thread doesn’t signal.
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.
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”).
Puts the connection into binary (image) mode, issues the given server-side command (such as “STOR myfile”), and sends the contents of the file named file to the server. If the optional block is given, it also passes it the data, in chunks of blocksize characters.
Retrieves remotefile in binary mode, storing the result in localfile. If localfile is nil, returns retrieved data. If a block is supplied, it is passed the retrieved data in blocksize chunks.
Transfers localfile to the server in binary mode, storing the result in remotefile. If a block is supplied, calls it, passing in the transmitted data in blocksize chunks.
Aborts the previous command (ABOR command).
Exits the FTP session.
Issues a SITE command.
Sends a PATCH request to the path and gets a response, as an HTTPResponse object.
Sends a PROPPATCH request to the path and gets a response, as an HTTPResponse object.
Disconnects from the server.
Returns true if disconnected from the server.
Sends the GETQUOTAROOT command along with the specified mailbox. This command is generally available to both admin and user. If this mailbox exists, it returns an array containing objects of type Net::IMAP::MailboxQuotaRoot and Net::IMAP::MailboxQuota.
Sends a SEARCH command to search the mailbox for messages that match the given searching criteria, and returns message sequence numbers. keys can either be a string holding the entire search string, or a single-dimension array of search keywords and arguments. The following are some common search criteria; see [IMAP] section 6.4.4 for a full list.
a set of message sequence numbers. ‘,’ indicates an interval, ‘:’ indicates a range. For instance, ‘2,10:12,15’ means “2,10,11,12,15”.
messages with an internal date strictly before <date>. The date argument has a format similar to 8-Aug-2002.
messages that contain <string> within their body.
messages containing <string> in their CC field.
messages that contain <string> in their FROM field.
messages with the Recent, but not the Seen, flag set.
negate the following search key.
“or” two search keys together.
messages with an internal date exactly equal to <date>, which has a format similar to 8-Aug-2002.
messages with an internal date on or after <date>.
messages with <string> in their subject.
messages with <string> in their TO field.
For example:
p imap.search(["SUBJECT", "hello", "NOT", "NEW"]) #=> [1, 6, 7, 8]