class - undefined local variable ruby -

here class:

class money   def initialize(dollars, quarters, dimes, nickels, pennies)     @coins = [ {:coin => dollars,  :price => 100},                {:coin => quarters, :price => 25},                {:coin => dimes,    :price => 10},                {:coin => nickels,  :price => 5},                {:coin => pennies,  :price => 1} ]   end   def count     total = 0.00     coins.each |coin|       next if coin[:price] == 0       total += coin[:coin] * coin[:price]     end     total / 100   end end 

and testing this:

money = money.new( 5, 1, 2, 1, 0 ) puts "$%.2f" % money.count 

i receiving error:

money.rb:12:in `count': undefined local variable or method `coins' #<money:0x2567310> (nameerror)     money.rb:34:in `<main>' 

which points line coins.each |coin| , doesn't make sense me because thought that, if prefix variable @, use throughout objects's methods (it not carry on different object).

i got working using different code does:

@dollar = dollar @quarter = quarter ... 

for initialize method (my count method radically different), trying create array of hash tables refactor count method.

any appreciated.

in count() method refer coins @coins. otherwise you've created variable available method in , not referencing instance variable created in initialize()

so reads:

def count     total = 0.00     @coins.each |coin|         next if coin[:price] == 0         total += coin[:coin] * coin[:price]     end     total / 100 end