RE: [boost] Re: OnReturn

From: Reece Dunn (msclrhd_at_[hidden])
Date: 2003-12-19 15:22:16

How about using a smart pointer-style management system, e.g. (using my 
implementation, but adabtable to others like Loki, et. al.):

struct FILEResource
{
   static void Free( FILE * f )
   {
      ::fclose( f );
   }
};

{
   adl::ptr::pointer< FILE *, FILEResource > hFile = ::fopen( "Foo", "w" );
   // ...
   hFile = ::fopen( "Foo2", "w" ); // will close the other file
}

This would then give additional advantages that sm art pointers provide. If 
you want to make it easier to supply the resource function, you could 
implement a ptr_fun style helper class:

   adl::ptr::pointer< FILE *, resource< ::fclose > > ...;

NOTE: If there is interest in my smart pointer implementation (based on 
Loki, CComPointer, and others), let me know and I'll post it to the files 
section. (I am not sure how portable the code is, though).

Regards,
Reece H Dunn

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