diff -r ee5959aa4410 -r c280de819a73 src/work/deba/invalid.h
--- a/src/work/deba/invalid.h	Sun Apr 17 18:57:22 2005 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,38 +0,0 @@
-// -*- mode:C++ -*-
-
-#ifndef LEMON_INVALID_H
-#define LEMON_INVALID_H
-
-///\file
-///\brief Definition of INVALID.
-
-namespace lemon {
-
-  /// Dummy type to make it easier to make invalid iterators.
-  
-  /// See \ref INVALID, how to use it.
-  
-  struct Invalid {
-  public:
-    bool operator==(Invalid) { return true;  }
-    bool operator!=(Invalid) { return false; }
-    bool operator< (Invalid) { return false; }
-  };
-  
-  /// Invalid iterators.
-  
-  /// \ref Invalid is a global type that converts to each iterator
-  /// in such a way that the value of the target iterator will be invalid.
-
-  // It is also used to convert the \c INVALID constant to the
-  // node iterator that makes is possible to write 
-
-  //extern Invalid INVALID;
-
-  //const Invalid &INVALID = *(Invalid *)0;
-  const Invalid INVALID = Invalid();
-
-} //namespace lemon
-
-#endif
-