【Boost】boost::string_algo詳解7——join的應用

template<typename SequenceSequenceT, typename Range1T>  range_value< SequenceSequenceT >::type  join(const SequenceSequenceT & Input, const Range1T & Separator);template<typename SequenceSequenceT, typename Range1T, typename PredicateT>  range_value< SequenceSequenceT >::type  join_if(const SequenceSequenceT & Input, const Range1T & Separator,PredicateT Pred);

例子:

void test_string_join(){using namespace boost::assign;std::vector<std::string> v = list_of("Samus")("Link")("Zelda")("Mario");std::copy(v.cbegin(), v.cend(), std::ostream_iterator<std::string>(std::cout, " "));std::cout << std::endl;std::cout << boost::join(v, ", ") << std::endl;struct is_contains_a{bool operator() (const std::string &x){return boost::contains(x, "a");}};std::cout << boost::join_if(v, "__", is_contains_a()) << std::endl;}