1  module ActiveSupport #:nodoc:
   2    module CoreExtensions #:nodoc:
   3      module Array #:nodoc:
   4        # Makes it easier to access parts of an array.
   5        module Access
   6          # Returns the tail of the array from +position+.
   7          #
   8          #   %w( a b c d ).from(0)  # => %w( a b c d )
   9          #   %w( a b c d ).from(2)  # => %w( c d )
  10          #   %w( a b c d ).from(10) # => nil
  11          #   %w().from(0)           # => nil
  12          def from(position)
  13            self[position..-1]
  14          end
  15          
  16          # Returns the beginning of the array up to +position+.
  17          #
  18          #   %w( a b c d ).to(0)  # => %w( a )
  19          #   %w( a b c d ).to(2)  # => %w( a b c )
  20          #   %w( a b c d ).to(10) # => %w( a b c d )
  21          #   %w().to(0)           # => %w()
  22          def to(position)
  23            self[0..position]
  24          end
  25 
  26          # Equal to <tt>self[1]</tt>.
  27          def second
  28            self[1]
  29          end
  30 
  31          # Equal to <tt>self[2]</tt>.
  32          def third
  33            self[2]
  34          end
  35 
  36          # Equal to <tt>self[3]</tt>.
  37          def fourth
  38            self[3]
  39          end
  40 
  41          # Equal to <tt>self[4]</tt>.
  42          def fifth
  43            self[4]
  44          end
  45 
  46          # Equal to <tt>self[41]</tt>. Also known as accessing "the reddit".
  47          def forty_two
  48            self[41]
  49          end
  50        end
  51      end
  52    end
  53  end