Item 19. Uncaught Exceptions

I l @ ve RuBoard

Difficulty: 6

What is the standard function uncaught_exception() , and when should it be used? The answer given here isn't one that most people expect.

1. What does std::uncaught_exception() do?

2. Consider the following code:

    T::~T() {   if( !std::uncaught_exception() )   {     // ... code that could throw ...   }   else   {         // ... code that won't throw ...       }     } 

   Is this a good technique? Present arguments for and against.

3. Is there any other good use for uncaught_exception() ? Discuss and draw conclusions.

I l @ ve RuBoard