From: Tim Wolak <twolak@...>
Date: 2008-04-24T22:11:27+09:00
Subject: Hash keys

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Morning,

I am working on some code to gather accounts and their balances from a text
file and have a question about adding that data to a hash.  While checking
to see if the account number is a key in the existing  hash using
has_key?(key), can=B9t I use the variable that has the account number in it=
 or
do I have to use the actual account number? When I run my code to check it I
get undefined method `has_key?' for nil:NilClass.  I ran a test using just
the account number in irb and it works but I would think you could use a
variable to iterate of my list of account numbers....  Thanks in advance




class Info
  attr_reader :acct, :money
=20=20
  def initialize(filename)
    @acct =3D File.new(filename, "r")
  end
    f =3D Info.new("Balances20080415.txt")
      act =3D f.acct
        act.each do |list|
          #covert me to a string
        futbal =3D list.to_s
        #Pull accounts
        office =3D futbal[21..23]
        if office =3D=3D "RPT"
          next
        else=20=20
          acctnum =3D futbal[24..28]
          lv =3D futbal[217..230]
          lvind =3D futbal[215..215]
          lvadd =3D lvind+lv
          lvadd.to_f/100
        end
          #if Negitave vlaues
            if lvind =3D=3D "-"
              lvnegfloat =3D lv.to_f/100
              #print acctnum," ",lvind, lvnegfloat, "\n"
              #puts lvadd
            sktylist =3D Hash.new("")
              #if(sktylist.has_key?(23))
               # sktylist =3D { acctnum =3D> lvind,lvnegfloat }
=20=20=20=20=20=20=20=20=20=20=20=20=20
              sktylist[acctnum] =3D lvind,lvnegfloat
              sktylist.each { |key, value| puts "#{key} equals #{value}" }
              #else Positive Values
=20=20=20=20=20=20=20=20=20=20=20=20=20=20
            elsif sktylist.has_key?('acctnum')
                    puts "found #{key}second key"
                #lvposflt =3D lv.to_f/100
=20=20=20=20=20=20=20=20=20=20=20=20=20=20
                #print acctnum, " ", lvposflt, "\n"
              end
            end
=20=20=20=20=20=20
end

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