Registering handler for unhandled exceptions

问题

Is it possible to define an exception handler for any unhandled exceptions? Wrapping my entire code block in a begin/rescue/end block feels messy.

回答1:

How about using at_exit? It should be called even when an exception occurs and you can log the last exception using $!

Here is an example:

at_exit {
puts "Last exception: (#{$!.inspect})"
puts "Backtrace: \n#{$@}"
puts "Exiting..."
}

puts "my app..."
raise "Exception!"

http://www.ruby-doc.org/core-1.9.3/Kernel.html#method-i-at_exit

来源：https://stackoverflow.com/questions/10521559/registering-handler-for-unhandled-exceptions