Update files

exercises/practice/robot-simulator/.meta/example.arr

@@ -3,6 +3,7 @@ use context essentials2020
 provide-types *
 
 include string-dict
+import lists as L
 
 data Axis: axis(label, left, right) end
 
@@ -16,21 +17,28 @@ cardinal_axes = [string-dict:
 data Robot:
   | robot(x :: NumInteger, y :: NumInteger, direction :: String) with:
     method move(self, directions :: String) -> Robot:
-      foldl(
+      L.foldl(
         lam(acc, elt):
           direction = 
             ask:
-              | elt == 'L' then: cardinal_axes.get-value(self.direction).left
-              | elt == 'R' then: cardinal_axes.get-value(self.direction).right
-              | otherwise: self.direction
+              | elt == 'L' then:
+                cardinal_axes.get-value(self.direction).left
+              | elt == 'R' then:
+                cardinal_axes.get-value(self.direction).right
+              | otherwise:
+                self.direction
             end
           {x; y} =
             if elt == 'A':
               ask:
-                | direction == 'north' then: {acc.x; acc.y + 1}
-                | direction == 'south' then: {acc.x; acc.y - 1}
-                | direction == 'east' then: {acc.x + 1; acc.y}
-                | direction == 'west' then: {acc.x - 1; acc.y}
+                | direction == 'north' then:
+                  {acc.x; acc.y + 1}
+                | direction == 'south' then:
+                  {acc.x; acc.y - 1}
+                | direction == 'east' then:
+                  {acc.x + 1; acc.y}
+                | direction == 'west' then:
+                  {acc.x - 1; acc.y}
               end
             else:
               {acc.x; acc.y}

exercises/practice/robot-simulator/robot-simulator.arr

@@ -1,8 +1,11 @@
-use context essentials2020
+use context essentials2020 # Don't delete this line when using Pyret on Exercism
 
 provide-types *
 
 data Robot:
   | robot(x :: NumInteger, y :: NumInteger, direction :: String)
-  # add your code here
+   with:
+    method move(self, directions :: String) -> Robot:
+      # Add your code here
+    end
 end