September Morn Update

Task/Short-circuit-evaluation/Visual-Basic-.NET/short-circuit-evaluation.visual

@@ -0,0 +1,29 @@
+Module Module1
+
+    Function A(v As Boolean) As Boolean
+        Console.WriteLine("a")
+        Return v
+    End Function
+
+    Function B(v As Boolean) As Boolean
+        Console.WriteLine("b")
+        Return v
+    End Function
+
+    Sub Test(i As Boolean, j As Boolean)
+        Console.WriteLine("{0} and {1} = {2} (eager evaluation)", i, j, A(i) And B(j))
+        Console.WriteLine("{0} or {1} = {2} (eager evaluation)", i, j, A(i) Or B(j))
+        Console.WriteLine("{0} and {1} = {2} (lazy evaluation)", i, j, A(i) AndAlso B(j))
+        Console.WriteLine("{0} or {1} = {2} (lazy evaluation)", i, j, A(i) OrElse B(j))
+
+        Console.WriteLine()
+    End Sub
+
+    Sub Main()
+        Test(False, False)
+        Test(False, True)
+        Test(True, False)
+        Test(True, True)
+    End Sub
+
+End Module