std::filesystem::directory_entry::is_directory
From cppreference.com
< cpp | filesystem | directory entry
bool is_directory() const; |
(1) | (since C++17) |
|
bool is_directory(
std::error_code
& ec )
const
noexcept
;
|
(2) | (since C++17) |
Checks whether the pointed-to object is a directory. Effectively returns:
1)
std::filesystem::is_directory
(status(
)
)
2)
std::filesystem::is_directory
(status(ec)
)
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
Exceptions
Any overload not marked noexcept may throw std::bad_alloc if memory allocation fails.
2) Sets a
std::error_code&
parameter to the OS API error code if an OS API call fails, and executes
ec.
clear
()
Example
Run this code
#include <filesystem> #include <iostream> #include <string_view> namespace fs = std::filesystem; void check_directory(fs::directory_entry const& d, std::string_view rem = "") { std::cout << "is_directory(" << d << "): " << d.is_directory() << rem << '\n'; } int main() { fs::directory_entry d1("."); fs::directory_entry d2("file.txt"); fs::directory_entry d3("new_dir"); std::cout << std::boolalpha; check_directory(d1); check_directory(d2); check_directory(d3, " (has not been created yet)."); std::filesystem::create_directory("new_dir"); check_directory(d3, " (before refresh)."); d3.refresh(); check_directory(d3, " (after refresh)."); }
Possible output:
is_directory("."): true
is_directory("file.txt"): false
is_directory("new_dir"): false (has not been created yet).
is_directory("new_dir"): false (before refresh).
is_directory("new_dir"): true (after refresh).
See also
|
(C++17)
|
checks whether the given path refers to a directory (function) |