Contents

• Today's Questions
• What's wrong with this code?
• Expect the unexpected!
• Expect the unexpected
• Catching exceptions with eval
• Leave the hard stuff to autodie
• Errors messages from autodie
• One subtlety with die (and warn)
• A note about eval
• Exceptions and debugging
• Why use exceptions?
• Why: easier than the alternative
• Why: separation of concerns
• Why: exception handling is fast
• Why: hard to ignore
• Why catch exceptions?
• Exceptions in Java
• Exceptions in Ruby
• Back to Perl
• Can you rely on $@?
• Not before 5.14 you can't
• Detect failure more reliably
• The Try::Tiny boilerplate
• Using Try::Tiny
• The magic of prototypes
• Handling exceptions
• Structured exceptions
• Using Exception::Class
• Exception::Class & Try::Tiny
• Ensure all exceptions are objects
• Handling autodie errors
• Try::Tiny::ByClass
• See also
• ...
• A Database Example
• The End