Constructs the eigenvalue decomposition for a square matrix A
Creates and returns a new FTP object. If a host is given, a connection is made.
options is an option hash, each key of which is a symbol.
The available options are:
Port number (default value is 21)
If options is true, then an attempt will be made to use SSL (now TLS) to connect to the server. For this to work OpenSSL [OSSL] and the Ruby OpenSSL [RSSL] extensions need to be installed. If options is a hash, it’s passed to OpenSSL::SSL::SSLContext#set_params as parameters.
If true, TLS is used for data connections. Default: true when options is true.
Username for login. If options is the string “anonymous” and the options is nil, “anonymous@” is used as a password.
Password for login.
Account information for ACCT.
When true, the connection is in passive mode. Default: true.
open_timeoutNumber of seconds to wait for the connection to open. See Net::FTP#open_timeout for details. Default: nil.
read_timeoutNumber of seconds to wait for one block to be read. See Net::FTP#read_timeout for details. Default: 60.
ssl_handshake_timeoutNumber of seconds to wait for the TLS handshake. See Net::FTP#ssl_handshake_timeout for details. Default: nil.
debug_modeWhen true, all traffic to and from the server is written to +$stdout+. Default: false.
Creates a new Net::HTTP object without opening a TCP connection or HTTP session.
The address should be a DNS hostname or IP address, the port is the port the server operates on. If no port is given the default port for HTTP or HTTPS is used.
If none of the p_ arguments are given, the proxy host and port are taken from the http_proxy environment variable (or its uppercase equivalent) if present. If the proxy requires authentication you must supply it by hand. See URI::Generic#find_proxy for details of proxy detection from the environment. To disable proxy detection set p_addr to nil.
If you are connecting to a custom proxy, p_addr the DNS name or IP address of the proxy host, p_port the port to use to access the proxy, and p_user and p_pass the username and password if authorization is required to use the proxy.
Creates an HTTP request object for path.
initheader are the default headers to use. Net::HTTP adds Accept-Encoding to enable compression of the response body unless Accept-Encoding or Range are supplied in initheader.
Creates a new Net::IMAP object and connects it to the specified host.
options is an option hash, each key of which is a symbol.
The available options are:
Port number (default value is 143 for imap, or 993 for imaps)
If options is true, then an attempt will be made to use SSL (now TLS) to connect to the server. For this to work OpenSSL [OSSL] and the Ruby OpenSSL [RSSL] extensions need to be installed. If options is a hash, it’s passed to OpenSSL::SSL::SSLContext#set_params as parameters.
The most common errors are:
Connection refused by host or an intervening firewall.
Connection timed out (possibly due to packets being dropped by an intervening firewall).
There is no route to that network.
SocketErrorHostname not known or other socket error.
Net::IMAP::ByeResponseErrorThe connected to the host was successful, but it immediately said goodbye.
Creates a new POP3 object.
address is the hostname or ip address of your POP3 server.
The optional port is the port to connect to.
The optional isapop specifies whether this connection is going to use APOP authentication; it defaults to false.
This method does not open the TCP connection.
Creates a new Net::SMTP object.
address is the hostname or ip address of your SMTP server. port is the port to connect to; it defaults to port 25.
This method does not open the TCP connection. You can use SMTP.start instead of SMTP.new if you want to do everything at once. Otherwise, follow SMTP.new with SMTP#start.
Creates a new URI::FTP object from generic URL components with no syntax checking.
Unlike build(), this method does not escape the path component as required by RFC1738; instead it is treated as per RFC2396.
Arguments are scheme, userinfo, host, port, registry, path, opaque, query and fragment, in that order.
Just initializes all instance variables.
Create a PrettyPrint::SingleLine object
Arguments:
output - String (or similar) to store rendered text. Needs to respond to ‘<<’
maxwidth - Argument position expected to be here for compatibility.
This argument is a noop.
newline - Argument position expected to be here for compatibility.
This argument is a noop.