Data commit

Task/Conditional-structures/Grain/conditional-structures-1.grain

@@ -0,0 +1,18 @@
+let x = if (1 < 2) {
+    ":)"
+} else { // The else clause is required here as x is a string
+    ":("
+}
+
+if (2 > 3) {
+    print("This should never execute.")
+} // We can omit the else clause here
+
+// We use else if for chaining
+if (1 > 2) {
+    print("1 is less than 2")
+} else if (2 == 3) {
+    print("2 is 3")
+} else {
+    print("This should always execute.")
+}

Task/Conditional-structures/Grain/conditional-structures-2.grain

@@ -0,0 +1,15 @@
+// A match statement more like the traditional switch statement
+// often seen in other languages.
+enum PizzaTopping { Cheese, Pepperoni, Peppers, Pineapple }
+
+let topping = Peppers
+
+match (topping) {
+  Cheese => print("Would it really be pizza without it?"),
+  Pepperoni => print("An instant classic."),
+  Peppers => {
+    // We can use a block for more expressions.
+    print("For those who like to spice things up.")
+  },
+  Pineapple => print("You do you.")
+}

Task/Conditional-structures/Grain/conditional-structures-3.grain

@@ -0,0 +1,15 @@
+enum Topping { Cheese, Pepperoni, Peppers, Pineapple }
+enum Menu { Pizza(Topping), Calzone(Topping) }
+
+let item = Calzone(Peppers)
+
+match (item) {
+  Calzone(topping) => {
+    if (checkSpecials(topping)) {
+      print("These are half off this week.")
+    } else {
+      print("No current specials.")
+    }
+  },
+  _ => print("No current specials.")
+}