simplify grid

src/aoc_2024/day_16.gleam

@@ -1,7 +1,6 @@
 import gleam/bool
 import gleam/dict.{type Dict}
 import gleam/int
-import gleam/io
 import gleam/list
 import gleam/option.{None, Some}
 import gleam/order
@@ -150,12 +149,12 @@ pub fn pt_2(input: Input) {
       best: 109_496,
     )
   //io.println_error(
-  //  grid.to_string(input.grid, fn(xy, c) {
+  //  grid.to_string_simple(input.grid, fn(xy, c) {
   //    case set.contains(steps, xy), c {
-  //      True, Error(Nil) -> #("O", Error(Nil))
+  //      True, Error(Nil) -> "O"
   //      True, Ok(Nil) -> panic as "walked over a wall?"
-  //      False, Error(Nil) -> #(".", Error(Nil))
-  //      False, Ok(Nil) -> #("#", Error(Nil))
+  //      False, Error(Nil) -> "."
+  //      False, Ok(Nil) -> "#"
   //    }
   //  }),
   //)

src/grid.gleam

@@ -448,6 +448,20 @@ pub fn to_string(
   |> string.join("\n")
 }
 
+pub fn to_string_simple(
+  grid grid: Grid(a),
+  fun fun: fn(XY, Result(a, Nil)) -> String,
+) -> String {
+  let x_range = list.range(from: grid.dims.min_x, to: grid.dims.max_x)
+  list.range(from: grid.dims.min_y, to: grid.dims.max_y)
+  |> list.map(fn(y) {
+    x_range
+    |> list.map(fn(x) { fun(#(x, y), get(grid, #(x, y))) })
+    |> string.concat
+  })
+  |> string.join("\n")
+}
+
 pub fn find_all_exact(grid: Grid(a), a: a) -> List(XY) {
   grid.data
   |> dict.to_list()