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selector.hh
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25 
26 #ifndef MLN_FUN_INTERNAL_SELECTOR_HH
27 # define MLN_FUN_INTERNAL_SELECTOR_HH
28 
33 
34 # include <mln/core/concept/function.hh>
35 # include <mln/metal/unqualif.hh>
36 
37 
38 namespace mln
39 {
40 
41  namespace fun
42  {
43 
44  namespace internal
45  {
46 
47 
48  template <typename R, typename A, typename E>
50  {
52  };
53 
54  template <typename A, typename E>
55  struct helper_selector_< bool, A, E >
56  {
58  };
59 
60 
61  template <typename R_, typename A_, typename E>
62  struct selector_
63  {
64  typedef mlc_unqualif(R_) R;
65  typedef mlc_unqualif(A_) A;
66  typedef typename helper_selector_<R, A, E>::ret ret;
67  private:
68  selector_();
69  };
70 
71  template <typename R_, typename E>
72  struct selector_from_result_ : selector_< R_, void, E >
73  {
74  private:
76  };
77 
78  } // end of namespace mln::fun::internal
79 
80  } // end of namespace mln::fun
81 
82 } // end of namespace mln
83 
84 
85 #endif // ! MLN_FUN_INTERNAL_SELECTOR_HH