Fixed clippy and fmt warnings.

Author: 607011

src/gen/gen.rs

@@ -45,8 +45,8 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
             std::process::exit(1);
         }
         m.replace([' ', '\n', '\r'], "")
-         .replace(['X', 'x'], "1")
-         .replace('.', "0")
+            .replace(['X', 'x'], "1")
+            .replace('.', "0")
     });
     let min_effort = cli.min_effort;
     let max_effort = cli.max_effort;

src/generator.rs

@@ -116,7 +116,7 @@ impl Iterator for SudokuGenerator {
                 }
             }
             FillAlgorithm::Mask => {
-                while let Some(board) = self.solutions_iter.next() {
+                for board in self.solutions_iter.by_ref() {
                     let sudoku = Sudoku::from_board(board);
                     let mut masked_sudoku = sudoku.clone();
                     if let Some(mask) = &self.mask {