Added snippets for conditional logical operators (#442)

dotnet · Nov 6, 2018 · 11a5469 · 11a5469
1 parent aab8265
commit 11a5469
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Showing 3 changed files with 73 additions and 5 deletions.
diff --git a/snippets/csharp/language-reference/operators/AndOperatorExamples.cs b/snippets/csharp/language-reference/operators/AndOperatorExamples.cs
@@ -26,10 +26,17 @@ private static void IntegerOperands()
         private static void BooleanOperands()
         {
             // <SnippetBooleanOperands>
-            int i = 0;
-            bool test = false & (++i == 1);
-            Console.WriteLine(test);   // output: False
-            Console.WriteLine(i);      // output: 1
+            bool SecondOperand() 
+            {
+                Console.WriteLine("Second operand is evaluated.");
+                return true;
+            }
+
+            bool test = false & SecondOperand();
+            Console.WriteLine(test);
+            // Output:
+            // Second operand is evaluated.
+            // False
             // </SnippetBooleanOperands>
         }
 

diff --git a/snippets/csharp/language-reference/operators/ConditionalLogicalOperatorsExamples.cs b/snippets/csharp/language-reference/operators/ConditionalLogicalOperatorsExamples.cs
@@ -0,0 +1,57 @@
+using System;
+
+namespace operators
+{
+    public static class ConditionalLogicalOperatorsExamples
+    {
+        public static void Examples()
+        {
+            ConditionalAnd();
+            ConditionalOr();
+        }
+
+        private static void ConditionalAnd()
+        {
+            // <SnippetAnd>
+            bool SecondOperand()
+            {
+                Console.WriteLine("Second operand is evaluated.");
+                return true;
+            }
+
+            bool a = false && SecondOperand();
+            Console.WriteLine(a);
+            // Output:
+            // False
+
+            bool b = true && SecondOperand();
+            Console.WriteLine(b);
+            // Output:
+            // Second operand is evaluated.
+            // True
+            // </SnippetAnd>
+        }
+
+        private static void ConditionalOr()
+        {
+            // <SnippetOr>
+            bool SecondOperand()
+            {
+                Console.WriteLine("Second operand is evaluated.");
+                return true;
+            }
+
+            bool a = true || SecondOperand();
+            Console.WriteLine(a);
+            // Output:
+            // True
+
+            bool b = false || SecondOperand();
+            Console.WriteLine(b);
+            // Output:
+            // Second operand is evaluated.
+            // True
+            // </SnippetOr>
+        }
+    }
+}
diff --git a/snippets/csharp/language-reference/operators/Program.cs b/snippets/csharp/language-reference/operators/Program.cs
@@ -22,13 +22,17 @@ static void Main(string[] args)
             AssignmentExamples.Examples();
             Console.WriteLine();
 
-            Console.WriteLine("============== ?: operator examples =============");
+            Console.WriteLine("============== ?: operator examples ============");
             ConditionalExamples.Examples();
             Console.WriteLine();
 
             Console.WriteLine("============== ~ operator examples =============");
             BitwiseComplementExamples.Examples();
             Console.WriteLine();
+
+            Console.WriteLine("============== && and || operator examples =====");
+            ConditionalLogicalOperatorsExamples.Examples();
+            Console.WriteLine();
         }
     }
 }