Fix operator precedence

maneatingape · maneatingape · commit d6c71d4826ff · 2025-01-02T05:07:55.000Z
diff --git a/src/year2016/day18.rs b/src/year2016/day18.rs
@@ -41,7 +41,7 @@ fn count(input: &str, rows: u32) -> u32 {
         // Count the traps in each row.
         total += row.count_ones();
         // Only consider the left and right values for the next row.
-        row = (row << 1) ^ (row >> 1) & mask;
+        row = ((row << 1) ^ (row >> 1)) & mask;
     }
 
     // We want the number of safe tiles so convert from the number of traps.

Original file line number	Diff line number	Diff line change
`@@ -41,7 +41,7 @@ fn count(input: &str, rows: u32) -> u32 {`
`41`	`41`	`// Count the traps in each row.`
`42`	`42`	`total += row.count_ones();`
`43`	`43`	`// Only consider the left and right values for the next row.`
`44`		`- row = (row << 1) ^ (row >> 1) & mask;`
	`44`	`+ row = ((row << 1) ^ (row >> 1)) & mask;`
`45`	`45`	`}`
`46`	`46`
`47`	`47`	`// We want the number of safe tiles so convert from the number of traps.`