#include <iostream>
#include <string>
#include <vector>

template <typename T, typename FuncT>
static void createElements(const std::vector<T>& v, FuncT create)
{
    for (const auto& item : v)
    {
        create(item);
    }
}

class edge {
public:
  edge() {
    street_names = {"gogogo"};
  }
  std::vector<std::string> streetNames() const
  {
      return street_names;
  }

  std::vector<std::string> street_names;
};

class ODSegment {
  public:
      ODSegment(){
      }
      std::vector<std::string> street_names; /**< the names of street. */
};

int main(int argc, char **argv) {
  std::shared_ptr<ODSegment> segment = std::make_shared<ODSegment>();
  std::vector<std::string> v_str;
  std::vector<std::string> mystr;

  edge e;
  auto test1 = e.streetNames().begin();
  auto test2 = e.streetNames().end();
  segment->street_names.assign(test1, test2);
  auto v1 = e.streetNames();
  auto v2 = e.streetNames();
  std::cout << "v1 begin: " << &(*v1.begin()) << std::endl;
  std::cout << "v1 begin: " << &(*v1.end()) << std::endl;
  std::cout << "v2 end: " << &(*v2.begin()) << std::endl;
  std::cout << "v2 end: " << &(*v2.end()) << std::endl;
  // segment->street_names.assign(e.streetNames().begin(), e.streetNames().end());     // error!!!

  createElements(segment->street_names, [&](const std::string& name) {
        std::cout << name << "~~~" << std::endl;
  });
  
  return 1;
}

输出：

v1 begin: 0x7fc8aa405b20
v1 begin: 0x7fc8aa405b38
v2 end: 0x7fc8aa405b40
v2 end: 0x7fc8aa405b58
gogogo~~~

通过上面v1,v2的内存地址可以看出(e.streetNames().begin(), e.streetNames().end()）是不同的迭代器，所以v1.begin() 不能匹配到 v2.end()