Exception handling is a mechanism for halting "normal" program flow and continuing at some surrounding context or code block.
The act of interrupting normal flow is called "raising" an exception. In some enclosing context the raised exception must be handled, which means control flow is transferred to an exception
handler. If an exception propagates up the call stack to the start of the program, then an unhandled exception will cause the program to terminate. An exception object, containing information about where and why an exceptional event occurred, is transported from the point at which the exception was raised to the exception handler so that the handler can interrogate the exception object and take appropriate action.
If you've used exceptions in other popular imperative languages like C++ or Java, then you've already got a good...
