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|    comp.lang.c++.moderated    |    Moderated discussion of C++ superhackery    |    33,346 messages    |
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|    Message 33,181 of 33,346    |
|    Richard Phillips to All    |
|    RAII advice (for a RAII newbie)    |
|    30 Aug 13 12:28:52    |
   
   From: riph72@googlemail.com   
      
   { Reformatted; please limit your lines to 70 chars -mod }   
      
   Hello all,   
      
   Going forward, I'm keen to start using RAII on projects, but in order   
   to justify my future evangelism, I want to clarify a few things...   
      
   So, borrowing an example from Jon Kalb's excellent tutorial videos:   
      
   // BAD   
   {   
    dosomething();   
    cleanup();   
   }   
      
      
   // GOOD (RAII)   
   {   
    CleanupType cleanup;   
    dosomething();   
   }   
      
      
   // ????   
   {   
    try   
    {   
    dosomething();   
    cleanup();   
    }   
    catch (const std::exception& ex)   
    {   
    cleanup();   
    }   
    catch (...)   
    {   
    cleanup();   
    }   
   }   
      
   Why is the 2nd (RAII) approach superior to the third approach? I   
   presume there's more to it than "appearance"? While the third   
   approach looks more complicated, it doesn't have to worry about a   
   "CleanupType"...   
      
   Regards,   
   Richard.   
      
      
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