Rails - Aug 2006 - NoMethod Error: Modifying Location of support modules

I''m trying to follow along with the Agile Development with Ruby on
Rails
book and have encountered a problem with code having the following 
syntax (partial class provided):

require "digest/sha1"

class User < ActiveRecord::Base
  private
  def self.hash_password(password)
    Digest:SHA1.hexdigest(password)
  end
end


I''m getting an error as:
undefined method `hexdigest'' for :SHA1:Symbol


I have installed Ruby 1.8.4.  How can I correct this error?  I''m
running
on Mac OS X and have followed the build instructions for Macs to install 
this version of Ruby.  If I need to manually move library/module files 
please point me to instructions as to how.

Thanks!

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On Aug 7, 2006, at 11:14 AM, Human Target wrote:
> require "digest/sha1"
>
> class User < ActiveRecord::Base
>   private
>   def self.hash_password(password)
>     Digest:SHA1.hexdigest(password)
>   end
> end
its Digest::SHA1.hexdigest(password) not Digest:SHA1.hexdigest

Warren Brian Noronha

My bad  :)  Thanks.

Warren Noronha wrote:
> On Aug 7, 2006, at 11:14 AM, Human Target wrote:
> 
>> require "digest/sha1"
>>
>> class User < ActiveRecord::Base
>>   private
>>   def self.hash_password(password)
>>     Digest:SHA1.hexdigest(password)
>>   end
>> end
> 
> its Digest::SHA1.hexdigest(password) not Digest:SHA1.hexdigest
> 
> Warren Brian Noronha

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