Boost.Regex oddity

Question

Hi, Does anyone have any idea why the following code would output "no match"?

  boost::regex r(".*\\.");
  std::string s("app.test");
  if (boost::regex_match(s, r))
    std::cout << "match" << std::endl;
  else
    std::cout << "no match" << std::endl;

Answer 1

I believe regex_match() matches against the entire string. Try regex_search() instead.

It would have worked with the following regex:

boost::regex r(".*\\..*");

and the regex_match() function. But again, regex_search() is what you're probably looking for.