Sudoku Py / C++11 / D?

[maarten van damme]

The infinite loop was my mistake. I was looking at your outer while loop
but because you use exceptions instead of return values it indeed throws an
exception, my bad :)

By replacing ref by const ref my program slowed down (looked over a period
of 10_000 runs). Not considerably but noticeable. Compiled with -release
-noboundscheck -O -inline. Anyone else experiencing the same?

Is copying a static arrays cheaper then recalculating the lovation of
collumns and squares btw?
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