scopes version of sudoku solver

[msklywenn]

As I started learning the scopes language and since it stated "performance of C", I wanted to check by myself. Adaptating the sudoku solver benchmark was a way of doing both learning and checking. Performance is indeed pretty good.

$ clang sudoku_v1.c -O3 -fomit-frame-pointer -o sudoku_v1.clang.exe
$ gcc sudoku_v1.c -O3 -fomit-frame-pointer -o sudoku_v1.gcc.exe
$ scopes sudoku_v1.sc && gcc sudoku_v1.sc.o sudoku_v1.sc.c.o -o sudoku_v1.sc.exe
$ time ./sudoku_v1.clang.exe < sudoku.top5k >/dev/null
real 0m2,017s
user 0m0,000s
sys 0m0,015s
$ time ./sudoku_v1.gcc.exe < sudoku.top5k >/dev/null
real 0m2,093s
user 0m0,000s
sys 0m0,015s
$ time ./sudoku_v1.sc.exe < sudoku.top5k >/dev/null
real 0m2,742s
user 0m0,000s
sys 0m0,015s

Intel Core i7-3520M @ 2.9Ghz, 8GB RAM, Windows 10, mingw64

[msklywenn]

I've added a racket implementation too. It's much slower than the scopes version.