How do I raise an exception in Ruby?

How do I raise an exception in Ruby?

In Ruby, you can raise an exception using the raise keyword followed by the exception class or message. For example: raise 'An error occurred'.

Can I create a custom exception in Ruby?

Yes, you can create a custom exception by subclassing the StandardError class. For example:

class MyCustomError < StandardError
end

What happens if I don't rescue an exception?

If you don't rescue an exception, it will propagate up the call stack, potentially terminating your program if unhandled.

How can I handle multiple exceptions in Ruby?

You can handle multiple exceptions by using multiple rescue clauses or by rescuing from a parent class that encompasses multiple exceptions.