Simple enough:

    for (int i = 0; auto const &e : some_container)
        DoSomeProcessing(e, i++);

-----Ursprüngliche Nachricht-----
Von: Frederick Virchanza Gotham via Std-Proposals <std-proposals@lists.isocpp.org>
Gesendet: Mi 01.03.2023 09:50
Betreff: [std-proposals] Array Index in Range-based For Loops
An: std-proposals <std-proposals@lists.isocpp.org>;
CC: Frederick Virchanza Gotham <cauldwell.thomas@gmail.com>;
Sometimes I write code like this:

   size_t i = -1;
   for ( auto const &e : some_container )
   {
       ++i;
       DoSomeProcessing(e, i);
   }

It would be nice if range-based for loops had an implicit counter
variable, so that the above code snippet could simply be written as:

   for ( auto const &e : some_container )
   {
       DoSomeProcessing(e, __i);
   }

I propose that this would work even with containers that don't allow
random access.
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