How to install?

# Fruit salad recipe
# Let's build a fruit-salad maker
# This snippet just shows various parts of Ruby speech.

module Salad
  class Fruit
    @@class_var = 0
    attr :symbol
    def initialize(fruit_list, counts)
      @instance_var = {}
      fruit_list.zip(counts).each { |a, b| @instance_var[a] = b } # block code
    end
    def mix()
      print "double-quoted string"
      print 'single-quoted string'
      print `command`
      print %Q(Q string)
      print %q(q string)
      print %r(reg ex)
      print %x(backquoted string)
      regex = /pattern/isx
      @@class_var += 1
    end
  end
end

fruit_list = %w(guava rambutan longan mangosteen)
counts = [3, 4, 1, 5]
fruits = Salad::Fruit.new(fruit_list, counts)

print <<abc
here document
abc

=begin
rubydoc
block comment
=end

__END__
end section