Sudoku Py / C++11 / D?

[Era Scarecrow]

On Monday, 20 August 2012 at 20:43:54 UTC, maarten van damme 
wrote:

> And Vera, why are you using exceptions instead of return 
> values? I think it's slowing your solver down considerably.

  Wow... Just Wow...

  Optimized I had the code at 5 seconds in my recently updated 
format, however now it increased to 31 seconds.  That makes it 
6-7 times slower by not using the two potential exceptions.