30 Input/output library [input.output]

30.10 File systems [filesystems]

30.10.15 Filesystem operation functions [fs.op.funcs]

30.10.15.18 Is directory [fs.op.is_directory]

bool is_directory(file_status s) noexcept;

Returns: s.type() == file_­type​::​directory.

bool is_directory(const path& p); bool is_directory(const path& p, error_code& ec) noexcept;

Returns: is_­directory(status(p)) or is_­directory(status(p, ec)), respectively. The signature with argument ec returns false if an error occurs.

Throws: As specified in [fs.err.report].