jkgraham

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jkgraham

# Simple hybrid crypto class using RSA for public key encryption and AES with CBC
# for bulk data encryption/decryption.
#
# RSA is used to encrypt the AES primitives which are used to encrypt the plaintext.
#
# @author Tasos "Zapotek" Laskos <[email protected]>
class RSA_AES_CBC

  # If only encryption is required the private key parameter can be omitted.
  #

jkgraham

'00501','Holtsville','NY','America/New_York'
'00544','Holtsville','NY','America/New_York'
'01001','Agawam','MA','America/New_York'
'01002','Amherst','MA','America/New_York'
'01003','Amherst','MA','America/New_York'
'01004','Amherst','MA','America/New_York'
'01005','Barre','MA','America/New_York'
'01007','Belchertown','MA','America/New_York'
'01008','Blandford','MA','America/New_York'
'01009','Bondsville','MA','America/New_York'

jkgraham

# Introduced these two classes to the students and asked them to refactor/improve the `calculate_balance` method.
# We initially suggested maybe breaking up the method in to smaller ones.

class Invoice < ActiveRecord::Base
  belongs_to :account

  def calculate_balance
    if display_ids.present?
      items = account.items.visible.where("id IN (#{display_ids})").oldest_first
    else

jkgraham

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