1 files changed, 13 insertions, 0 deletions
diff --git a/src/grid.rs b/src/grid.rs
index 659ef01..f099189 100644
--- a/src/grid.rs
+++ b/src/grid.rs
@@ -2,11 +2,24 @@
     Copy, Clone, Hash, Eq, PartialEq, Ord, PartialOrd, Debug, Default,
 )]
 pub struct Row(pub usize);
+
 #[derive(
     Copy, Clone, Hash, Eq, PartialEq, Ord, PartialOrd, Debug, Default,
 )]
 pub struct Col(pub usize);
 
+impl Row {
+    pub fn abs_diff(self, other: Self) -> Self {
+        Self(self.0.abs_diff(other.0))
+    }
+}
+
+impl Col {
+    pub fn abs_diff(self, other: Self) -> Self {
+        Self(self.0.abs_diff(other.0))
+    }
+}
+
 impl std::ops::Add<usize> for Row {
     type Output = Self;
     fn add(self, other: usize) -> Self::Output {