Returns the name or string corresponding to sym.
:fred.id2name #=> "fred" :ginger.to_s #=> "ginger"
Return the path as a String.
to_path is implemented so Pathname objects are usable with File.open, etc.
Returns a new Array containing each key-value pair in the database.
Example:
require 'sdbm' SDBM.open 'my_database' do |db| db.update('apple' => 'fruit', 'spinach' => 'vegetable') db.to_a #=> [["apple", "fruit"], ["spinach", "vegetable"]] end
returns the socket address as packed struct sockaddr string.
Addrinfo.tcp("localhost", 80).to_sockaddr #=> "\x02\x00\x00P\x7F\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00"
Returns self. If called on a subclass of Hash, converts the receiver to a Hash object.
If a block is given, the results of the block on each pair of the receiver will be used as pairs.
Converts hsh to a nested array of [ key, value ] arrays.
h = { "c" => 300, "a" => 100, "d" => 400, "c" => 300 } h.to_a #=> [["c", 300], ["a", 100], ["d", 400]]
Return the contents of this hash as a string.
h = { "c" => 300, "a" => 100, "d" => 400, "c" => 300 } h.to_s #=> "{\"c\"=>300, \"a\"=>100, \"d\"=>400}"
Converts the environment variables into an array of names and value arrays.
ENV.to_a # => [["TERM", "xterm-color"], ["SHELL", "/bin/bash"], ...]
Returns “ENV”
Creates a hash with a copy of the environment variables.
Returns “ARGF”.
Returns an integer representing the numeric file descriptor for the current file. Raises an ArgumentError if there isn’t a current file.
ARGF.fileno #=> 3
Reads ARGF‘s current file in its entirety, returning an Array of its lines, one line per element. Lines are assumed to be separated by sep.
lines = ARGF.readlines lines[0] #=> "This is line one\n"
Returns the integer representation of the ipaddr.
Returns a string containing the IP address representation.
Returns an array of arrays that describe the rows of the matrix.
Overrides Object#to_s
Returns the elements of the vector in an array.
Overrides Object#to_s
Returns option summary list.
Returns the array of matches.
m = /(.)(.)(\d+)(\d)/.match("THX1138.") m.to_a #=> ["HX1138", "H", "X", "113", "8"]
Because to_a is called when expanding *variable, there’s a useful assignment shortcut for extracting matched fields. This is slightly slower than accessing the fields directly (as an intermediate array is generated).
all,f1,f2,f3 = * /(.)(.)(\d+)(\d)/.match("THX1138.") all #=> "HX1138" f1 #=> "H" f2 #=> "X" f3 #=> "113"
Returns the entire matched string.
m = /(.)(.)(\d+)(\d)/.match("THX1138.") m.to_s #=> "HX1138"