Data commit

Task/Variables/Wren/variables.wren

@@ -0,0 +1,15 @@
+var a           // declares the variable 'a' with the default value of 'null'
+a = 1           // initializes 'a'
+a = "a"         // assigns a different value to 'a'
+var b = 2       // declares and initializes 'b' at the same time
+b = true        // assigns a different value to 'b'
+var c = [3, 4]  // 'c' is assigned a List which is a reference type
+c = false       // 'c' is reassigned a Bool which is a value type
+
+var d = 1       // declaration at top level
+{
+    var d = 2   // declaration within a nested scope, hides top level 'd'
+    var e = 3   // not visible outside its scope i.e this block
+}
+System.print(d) // prints the value of the top level 'd'
+System.print(e) // compiler error : Variable is used but not defined