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is_ref.hh
1 // Copyright (C) 2008, 2009 EPITA Research and Development Laboratory (LRDE)
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25 
26 #ifndef MLN_METAL_IS_REF_HH
27 # define MLN_METAL_IS_REF_HH
28 
35 # include <mln/metal/bool.hh>
36 
37 
38 # define mlc_is_ref(T) mln::metal::is_ref< T >
39 
40 
41 namespace mln
42 {
43 
44  namespace metal
45  {
46 
47  template <typename T>
48  struct is_ref : false_
49  {};
50 
51  template <typename T>
52  struct is_ref< T& > : true_
53  {};
54 
55  template <typename T>
56  struct is_ref< const T& > : true_
57  {};
58 
59  } // end of namespace mln::metal
60 
61 } // end of namespace mln
62 
63 
64 #endif // ! MLN_METAL_IS_REF_HH