Results for: "Data"

Returns an UnboundMethod representing the given instance method in mod.

class Interpreter
  def do_a() print "there, "; end
  def do_d() print "Hello ";  end
  def do_e() print "!\n";     end
  def do_v() print "Dave";    end
  Dispatcher = {
    "a" => instance_method(:do_a),
    "d" => instance_method(:do_d),
    "e" => instance_method(:do_e),
    "v" => instance_method(:do_v)
  }
  def interpret(string)
    string.each_char {|b| Dispatcher[b].bind(self).call }
  end
end

interpreter = Interpreter.new
interpreter.interpret('dave')

produces:

Hello there, Dave!

Synonym for ENV.

Returns the fractional part of the day in range (Rational(0, 1)…Rational(1, 1)):

DateTime.new(2001,2,3,12).day_fraction # => (1/2)

Returns a copy of self with the given start value:

d0 = Date.new(2000, 2, 3)
d0.julian? # => false
d1 = d0.new_start(Date::JULIAN)
d1.julian? # => true

See argument start.

Equivalent to Date#+ with argument n.

Equivalent to Date#- with argument n.

See as_json.

See as_json.

See as_json.

Waits until IO is readable and returns a truthy value, or a falsy value when times out. Returns a truthy value immediately when buffered data is available.

You must require ‘io/wait’ to use this method.

Waits until IO is writable and returns a truthy value or a falsy value when times out.

You must require ‘io/wait’ to use this method.

Returns the path associated with the IO, or nil if there is no path associated with the IO. It is not guaranteed that the path exists on the filesystem.

$stdin.path # => "<STDIN>"

File.open("testfile") {|f| f.path} # => "testfile"

See as_json.

See as_json.

See as_json.

See as_json.

See as_json.

With no argument, returns the value of $~, which is the result of the most recent pattern match (see Regexp global variables):

/c(.)t/ =~ 'cat'  # => 0
Regexp.last_match # => #<MatchData "cat" 1:"a">
/a/ =~ 'foo'      # => nil
Regexp.last_match # => nil

With non-negative integer argument n, returns the _n_th field in the matchdata, if any, or nil if none:

/c(.)t/ =~ 'cat'     # => 0
Regexp.last_match(0) # => "cat"
Regexp.last_match(1) # => "a"
Regexp.last_match(2) # => nil

With negative integer argument n, counts backwards from the last field:

Regexp.last_match(-1)       # => "a"

With string or symbol argument name, returns the string value for the named capture, if any:

/(?<lhs>\w+)\s*=\s*(?<rhs>\w+)/ =~ 'var = val'
Regexp.last_match        # => #<MatchData "var = val" lhs:"var"rhs:"val">
Regexp.last_match(:lhs)  # => "var"
Regexp.last_match('rhs') # => "val"
Regexp.last_match('foo') # Raises IndexError.

See as_json.

See as_json.

Returns an array of values from self.

With integer arguments integers given, returns an array containing each value given by one of integers:

Customer = Struct.new(:name, :address, :zip)
joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
joe.values_at(0, 2)    # => ["Joe Smith", 12345]
joe.values_at(2, 0)    # => [12345, "Joe Smith"]
joe.values_at(2, 1, 0) # => [12345, "123 Maple, Anytown NC", "Joe Smith"]
joe.values_at(0, -3)   # => ["Joe Smith", "Joe Smith"]

Raises IndexError if any of integers is out of range; see Array Indexes at Array.

With integer range argument integer_range given, returns an array containing each value given by the elements of the range; fills with nil values for range elements larger than the structure:

joe.values_at(0..2)
# => ["Joe Smith", "123 Maple, Anytown NC", 12345]
joe.values_at(-3..-1)
# => ["Joe Smith", "123 Maple, Anytown NC", 12345]
joe.values_at(1..4) # => ["123 Maple, Anytown NC", 12345, nil, nil]

Raises RangeError if any element of the range is negative and out of range; see Array Indexes at Array.

See as_json.

Equivalent to self.to_s.start_with?; see String#start_with?.

Return the path as a String.

to_path is implemented so Pathname objects are usable with File.open, etc.

Returns the absolute path for the file.

See File.expand_path.