Exceptions

exception-handling.md

#Exception Handling

#Bullet Points

• raise or fail

#Demo / Live-code Overview

• Custom StandardError class
• raise makes RuntimeError with argument as message

begin  
  # do our work  
rescue  => e
  # This will catch all StandardErrors and its subclasses
rescue SomeException => e  
  # Maybe do this  
rescue Exception => e
  # Maybe don't do this...
  # Are you sure you want to catch everything?
else  
  # good, no exception surfaced!  
ensure  
  # good or bad, this needs to be done  
end  

• Subclass StandardError
• THE PERILS OF 'RESCUE EXCEPTION'