1.1 --- a/lemon/utility.h	Wed Mar 01 09:40:16 2006 +0000
     1.2 +++ b/lemon/utility.h	Wed Mar 01 10:04:47 2006 +0000
     1.3 @@ -68,21 +68,12 @@
     1.4      static const bool value = false;
     1.5    };
     1.6  
     1.7 -  template <bool left, bool right>
     1.8 -  struct _CompileTimeAnd {
     1.9 -    static const bool value = false;
    1.10 +
    1.11 +  class InvalidType {
    1.12 +  private:
    1.13 +    InvalidType();
    1.14    };
    1.15    
    1.16 -  template <>
    1.17 -  struct _CompileTimeAnd<true, true> {
    1.18 -    static const bool value = true;
    1.19 -  };
    1.20 -
    1.21 -  template <typename Left, typename Right>
    1.22 -  struct CompileTimeAnd {
    1.23 -    static const bool value = 
    1.24 -    _CompileTimeAnd<Left::value, Right::value>::value;
    1.25 -  };
    1.26  
    1.27    template <typename T>
    1.28    struct Wrap {