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std::filesy...s_directory(3) C++ Standard Libary std::filesy...s_directory(3) NAME std::filesystem::directory_entry::is_directory - std::filesystem::di- rectory_entry::is_directory Synopsis bool is_directory() const; (since C++17) bool is_directory( std::error_code& ec ) const noexcept; Checks whether the pointed-to object is a directory. Effectively re- turns std::filesystem::is_directory(status()) or std::filesystem::is_directory(status(ec)), respectively. Parameters ec - out-parameter for error reporting in the non-throwing overload Return value true if the referred-to filesystem object is a directory, false oth- erwise. Exceptions The overload that does not take a std::error_code& parameter throws filesystem::filesystem_error on underlying OS API errors, con- structed with p as the first path argument and the OS error code as the error code argu- ment. The overload taking a std::error_code& parameter sets it to the OS API error code if an OS API call fails, and executes ec.clear() if no errors occur. Any overload not marked noexcept may throw std::bad_alloc if memory allocation fails. Example // Run this code #include <iostream> #include <filesystem> namespace fs = std::filesystem; int main() { fs::directory_entry d1("."); fs::directory_entry d2("file.txt"); fs::directory_entry d3("new_dir"); std::cout << std::boolalpha << ". d1 " << d1.is_directory() << '\n' << "file.txt d2 " << d2.is_directory() << '\n' // false because it has not been created << "new_dir d3 " << d3.is_directory() << '\n'; fs::create_directory("new_dir"); std::cout << "new_dir d3 before refresh " << d3.is_directory() << '\n'; d3.refresh(); std::cout << "new_dir d3 after refresh " << d3.is_directory() << '\n'; } Possible output: . d1 true file.txt d2 false new_dir d3 false new_dir d3 before refresh false new_dir d3 after refresh true See also is_directory checks whether the given path refers to a directory (C++17) (function) http://cppreference.com 2022.07.31 std::filesy...s_directory(3)
NAME | Synopsis | Parameters | Return value | Exceptions | Example | Possible output: | See also
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