The changelog for 1.34.0 states: [...] * New functions status, symlink_status, is_file, is_symlink, create_hard_link, create_symlink, path member and non-member swap, path inserter, path extractor, additional path relational and "/" operator overloads, additional path member template functions taking iterator arguments. [...] I tried to use "is_file" but it seems to be undefined. But filesystem/operations.hpp defines the following function: inline bool is_regular( file_status f ) { return f.type() == regular_file; } If I interpret that right, then "is_iregular" is what is called "is_file" in the documentation. Is this correct? best regards from Graz, Austria Gunther BTW: Also the links on the changelog-page to the mentioned functions don't work. see http://www.boost.org/libs/filesystem/doc/index.htm#Change-history