idiomatique change

Code/ldpc/src/tanner.rs

@@ -11,14 +11,15 @@ impl TannerGraph {
         let mut check = vec![vec![]; matrix.rows];
         let mut bits = vec![vec![]; matrix.cols];
 
-        for i in 0..matrix.rows {
-            for j in 0..matrix.cols {
+        for (i, row_check) in check.iter_mut().enumerate() {
+            for (j, col_bits) in bits.iter_mut().enumerate() {
                 if matrix.get(i, j) == 0 {
-                    check[i].push(j);
-                    bits[j].push(i);
+                    row_check.push(j);
+                    col_bits.push(i);
                 }
             }
         }
+
         Self { check, bits }
     }
 }