How can I handle advanced errors in Ruby?

How can I handle advanced errors in Ruby?

In Ruby, you can handle advanced errors using custom exception classes and the rescue keyword. Would you like an example?

Yes, please provide an example of a custom exception.

Sure! You can create a custom exception like this:

class MyCustomError < StandardError; end

begin
  raise MyCustomError, 'Something went wrong!'
rescue MyCustomError => e
  puts e.message
end

What about handling multiple exceptions?

You can rescue multiple exceptions by specifying them in an array:

begin
  # some code
rescue [MyCustomError, AnotherError] => e
  puts e.message
end

How do I ensure that certain code runs regardless of errors?

You can use the ensure block for that. It runs whether an error occurs or not:

begin
  # some code
rescue MyCustomError => e
  puts e.message
ensure
  puts 'This will always run.'
end