DebuggerDisplay for Option<T>

atifaziz · Dec 23, 2016 · f4668ce · f4668ce
1 parent c9b9959
commit f4668ce
Show file tree

Hide file tree

Showing 2 changed files with 22 additions and 1 deletion.
diff --git a/Optional/Option_Maybe.cs b/Optional/Option_Maybe.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.Linq;
 using System.Text;
 
@@ -12,6 +13,7 @@ namespace Optional
 #if !NETSTANDARD
     [Serializable]
 #endif
+    [DebuggerDisplay("{" + nameof(DebugString) + "}")]
     public struct Option<T> : IEquatable<Option<T>>
     {
         private readonly bool hasValue;
@@ -91,6 +93,24 @@ public override int GetHashCode()
             return 0;
         }
 
+        string DebugString
+        {
+            get
+            {
+                if (hasValue)
+                {
+                    if (value == null)
+                    {
+                        return "Some(null)";
+                    }
+
+                    return string.Format("Some({0})", value);
+                }
+
+                return "None";
+            }
+        }
+
         /// <summary>
         /// Returns a string that represents the current optional.
         /// </summary>

diff --git a/Portable.Optional/project.json b/Portable.Optional/project.json
@@ -3,7 +3,8 @@
   "dependencies": {
     "Microsoft.NETCore.Portable.Compatibility": "1.0.1",
     "Microsoft.NETCore.Platforms": "1.0.1",
-    "System.Collections": "4.0.11"
+    "System.Collections": "4.0.11",
+    "System.Diagnostics.Debug": "4.0.11"
   },
   "frameworks": {
     "netstandard1.0": {}