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value_iterator.hh
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26 
27 #ifndef MLN_CORE_CONCEPT_VALUE_ITERATOR_HH
28 # define MLN_CORE_CONCEPT_VALUE_ITERATOR_HH
29 
35 # include <mln/core/concept/iterator.hh>
36 
37 
38 namespace mln
39 {
40 
50  template <typename E>
51  struct Value_Iterator : public Iterator<E>
52  {
53  /*
54  typedef value;
55  operator value() const;
56  */
57 
58  protected:
60  };
61 
62 
75  template <typename E>
76  std::ostream& operator<<(std::ostream& ostr, const Value_Iterator<E>& v);
77 
78 
79 
80 # ifndef MLN_INCLUDE_ONLY
81 
82  template <typename E>
83  inline
85  {
86  typedef mln_value(E) value;
87  value (E::*m)() const = & E::operator value;
88  (void) m;
89  }
90 
91  template <typename E>
92  inline
93  std::ostream& operator<<(std::ostream& ostr, const Value_Iterator<E>& v)
94  {
95  mln_precondition(exact(v).is_valid());
96  return ostr << mln_value(E)(exact(v));
97  }
98 
99 # endif // ! MLN_INCLUDE_ONLY
100 
101 } // end of namespace mln
102 
103 
104 #endif // ! MLN_CORE_CONCEPT_VALUE_ITERATOR_HH