The classics are always passed-Exception Handling: A False Sense of Security

链接：
Exception Handling: A False Sense of Security
– C++ Report, Tom Cargill, Vol.6, No.9, November-December 1994

1. Argument expressions are fully evaluated before their function is called.
   v[top–], top has been decremented before calling the copy construct return statement. Code:

    template 
   T Stack::pop()
   {
         
         
     if( top < 0 )
       throw ""pop on empty stack"";
     return v[top--]; // throw
   }
   

2. Don't worry about new exceptions, except catching bad_alloc exceptions and logging (the memory has to be enough). There is no good way, right? ? ?