1 files changed, 13 insertions, 0 deletions

diff --git a/2022/08/common.rs b/2022/08/common.rs
new file mode 100644
index 0000000..45fbf10
--- /dev/null
+++ b/2022/08/common.rs
@@ -0,0 +1,13 @@
+pub type Grid = Vec<Vec<(i8, bool)>>;
+
+pub fn read_grid_from_stdin() -> Grid {
+    let mut grid = Vec::<Vec<(i8, bool)>>::new();
+    let mut line = String::new();
+    while std::io::stdin().read_line(&mut line).unwrap() > 0 {
+        let row = line[..line.len()-1].as_bytes().iter()
+            .map(|b| ((*b as i8) - ('0' as i8), false)).collect();
+        grid.push(row);
+        line.clear();
+    }
+    grid
+}