...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
This is the translator example from the tutorial. In this example the collection type of relation is changed to allow the iteration of the container.
#include <iostream> #include <string> #include <boost/bimap/bimap.hpp> #include <boost/bimap/list_of.hpp> #include <boost/bimap/unordered_set_of.hpp> struct english {}; struct spanish {}; int main() { using namespace boost::bimaps; typedef bimap < unordered_set_of< tagged< std::string, spanish > >, unordered_set_of< tagged< std::string, english > >, list_of_relation > translator; translator trans; // We have to use `push_back` because the collection of relations is // a `list_of_relation` trans.push_back( translator::value_type("hola" ,"hello" ) ); trans.push_back( translator::value_type("adios" ,"goodbye" ) ); trans.push_back( translator::value_type("rosa" ,"rose" ) ); trans.push_back( translator::value_type("mesa" ,"table" ) ); std::cout << "enter a word" << std::endl; std::string word; std::getline(std::cin,word); // Search the queried word on the from index (Spanish) translator::map_by<spanish>::const_iterator is = trans.by<spanish>().find(word); if( is != trans.by<spanish>().end() ) { std::cout << word << " is said " << is->get<english>() << " in English" << std::endl; } else { // Word not found in Spanish, try our luck in English translator::map_by<english>::const_iterator ie = trans.by<english>().find(word); if( ie != trans.by<english>().end() ) { std::cout << word << " is said " << ie->get<spanish>() << " in Spanish" << std::endl; } else { // Word not found, show the possible translations std::cout << "No such word in the dictionary" << std::endl; std::cout << "These are the possible translations" << std::endl; for( translator::const_iterator i = trans.begin(), i_end = trans.end(); i != i_end ; ++i ) { std::cout << i->get<spanish>() << " <---> " << i->get<english>() << std::endl; } } } return 0; }