Guidelines, errors

• Trap errors when/where they occur

  • All public code within try-catch

• Handle errors properly

  • Should user be informed ?
  • Has the user caused the error (how could we let him) ?
  • Is there something the user can do to prevent/fix the error ?

• Program flow

  • Always assume errors, only return status OK if everything really has proved OK
  • Use functions in order to return status to calling method
  • Never let users do anything they shouldn’t be allowed to do

Notes: