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  1. #include <iostream>
  2. #include <vector>
  3. #include <string>
  4. #include <typeinfo>
  5. #include <boost/mpl/list.hpp>
  6. #include <boost/mpl/map.hpp>
  7. #include <boost/mpl/for_each.hpp>
  8. #include <boost/mpl/key_type.hpp> 
  9.  
  10. using namespace boost;
  11. using namespace std;
  12.  
  13. struct Disp {
  14.     template <class Type>
  15.     void operator()(const Type&) const
  16.     {
  17.         cout << typeid(Type).name() << endl;
  18.     }
  19.     template <typename K, typename V>
  20.     void operator()(const mpl::pair<K,V>&) const {
  21.         cout << typeid(K).name() << "," << typeid(V).name() << endl;
  22.     }
  23. } disp;
  24.  
  25.  
  26. int main()
  27. {
  28.     typedef mpl::list<int, std::string, char, std::vector<int> > tl;
  29.     typedef mpl::map<mpl::pair<int,char>, mpl::pair<int,int>, mpl::pair<char, char> > t2;
  30.  
  31.     cout << "mpl list test" << endl;
  32.     mpl::for_each<tl>(disp);
  33.     cout << "mpl  map test" << endl;
  34.     mpl::for_each<t2>(disp);
  35.     cout << "mpl  map key_type test" << endl;
  36.     mpl::for_each<t2, mpl::lambda<mpl::key_type<t2, mpl::_1> > >(disp);
  37.     cout << "finish" << endl;
  38.  
  39.     return 0;
  40. }
  41.  
Success #stdin #stdout 0.02s 2684KB
comments (?)
stdin 
Standard input is empty
stdout 
mpl list test
i
Ss
c
St6vectorIiSaIiEE
mpl  map test
i,c
i,i
c,c
mpl  map key_type test
i
i
c
finish
https://ideone.com/rrk1ZY
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
secret

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