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set/diff.hh
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25 
26 #ifndef MLN_SET_DIFF_HH
27 # define MLN_SET_DIFF_HH
28 
35 
36 # include <algorithm>
37 # include <iterator>
38 
39 # include <mln/core/site_set/p_set.hh>
40 # include <mln/convert/from_to.hh>
41 # include <mln/util/ord.hh>
42 
43 
44 
45 namespace mln
46 {
47 
48  namespace set
49  {
50 
55  template <typename Sl, typename Sr>
56  p_set<mln_site(Sl)>
57  diff(const Site_Set<Sl>& lhs, const Site_Set<Sr>& rhs);
58 
59 
60 
61 # ifndef MLN_INCLUDE_ONLY
62 
63  template <typename Sl, typename Sr>
64  inline
65  p_set<mln_site(Sl)>
66  diff(const Site_Set<Sl>& lhs, const Site_Set<Sr>& rhs)
67  {
68  mln_trace("set::diff");
69 
70  typedef mln_site(Sl) P;
71  mlc_converts_to(mln_psite(Sr), P)::check();
72  std::set< P, util::ord<P> > sl, sr, sd;
73  convert::from_to(lhs, sl);
74  convert::from_to(rhs, sr);
75  std::set_difference(sl.begin(), sl.end(),
76  sr.begin(), sr.end(),
77  std::inserter(sd, sd.begin()),
78  util::ord<P>());
79  p_set<P> s;
80  convert::from_to(sd, s);
81 
82  return s;
83  }
84 
85 # endif // ! MLN_INCLUDE_ONLY
86 
87  } // end of namespace mln::set
88 
89 } // end of namespace mln
90 
91 
92 #endif // ! MLN_SET_DIFF_HH