boost::urls::segments_base::front Return the first segment Synopsis Declared in header <boost/url/segments_base.hpp> std::string front() const noexcept; Description This function returns a string with the first segment of the path without any leading or trailing '/' separators. Any percent-escapes in the string are decoded first. this->empty() == false return *begin(); assert( url_view( "/path/to/file.txt" ).segments().front() == "path" ); Linear in this->front().size(). Calls to allocate may throw.