Exceptions do not specify from where exactly they should “come from” and are two-way protocol akin to setjmp/longjmp. Situations where exit through few levels o

Exceptions do not specify from where exactly they should “come from” and are two-way protocol akin to setjmp/longjmp. Situations where exit through few levels of stack is required do happen regardless of code cleanness, and the only alternative is to pair every call with a flow control statement, turn primary return value into a status, and add two out-arguments for error and result. Some people love this, some not really.