Another Basic Ruby Question

ruby-talk
1

Within the Class I define things which I would expect to be Global.
Both the matrix and the reference to class are not seen in the method
calculate, as they fall outside of the method declaration. How do I
make them visible, so they can remain where they are( Yes, I could pass
the matrix variable - e.g., calculate(m)- but is there another way to do
this?) I don't think I could pass subr in this manner.

Class Subroutines

#some subroutines listed here
   def altitude(abs_psr_inhg)
      #stuff
   end

end

Class Ballistics

   require 'Matrix'

   m = Matrix[[1,2,3],[4,5,6]]
   subr = Subroutines.new

   def calculate

      puts m
      alt = subr.altitude(abs_psr_inhg)

   end

end

···

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2

You could use instance variables. By the way, class is lowecase:

class Subroutines
  def altitude(abs_psr_inhg)
    puts "altitude"
  end
end

class Ballistics
  require 'Matrix'
  def initialize
    @m = Matrix[[1,2,3],[4,5,6]]
    @subr = Subroutines.new
  end

  def calculate
    puts @m
    alt = @subr.altitude(@m)
  end
end

b = Ballistics.new
b.calculate

Jesus.

···

On Wed, Jan 26, 2011 at 12:36 AM, Jim Carter <jcarter@leupold.com> wrote:

Within the Class I define things which I would expect to be Global.
Both the matrix and the reference to class are not seen in the method
calculate, as they fall outside of the method declaration. How do I
make them visible, so they can remain where they are( Yes, I could pass
the matrix variable - e.g., calculate(m)- but is there another way to do
this?) I don't think I could pass subr in this manner.

Class Subroutines

#some subroutines listed here
def altitude(abs_psr_inhg)
#stuff
end

end

Class Ballistics

require 'Matrix'

m = Matrix[[1,2,3],[4,5,6]]
subr = Subroutines.new

def calculate

 puts m
 alt = subr\.altitude\(abs\_psr\_inhg\)

end

end