[svn] r6095: nemerle/trunk/lib/option.n

[malekith]

Log:
Add Value and HasValue in style of Nullable.

Author: malekith
Date: Mon Jan 30 13:04:18 2006
New Revision: 6095

Modified:
   nemerle/trunk/lib/option.n

Modified: nemerle/trunk/lib/option.n
==============================================================================
--- nemerle/trunk/lib/option.n	(original)
+++ nemerle/trunk/lib/option.n	Mon Jan 30 13:04:18 2006
@@ -87,6 +87,22 @@
         | None => val
       }
     }
+
+    public HasValue : bool
+    {
+      get { this is Some (_) }
+    }
+
+    public Value : 'a
+    {
+      get { 
+        match (this) {
+          | Some (x) => x
+          | None =>
+            throw System.ArgumentException ("option.Value")
+        }
+      }
+    }
   }