Function HasTrailingSlash

cpp/src/arrow/filesystem/path_util.h:101–103

Status AssertNoTrailingSlash(std::string_view s);

inline bool HasTrailingSlash(std::string_view s) {
  return !s.empty() && s.back() == kSep;
}

inline bool HasLeadingSlash(std::string_view s) {
  return !s.empty() && s.front() == kSep;