std::experimental::filesystem::directory_iterator
| Defined in header <experimental/filesystem>
|
||
| class directory_iterator; |
(filesystem TS) | |
directory_iterator is an LegacyInputIterator that iterates over the directory_entry elements of a directory (but does not visit the subdirectories). The iteration order is unspecified, except that each directory entry is visited only once. The special pathnames dot and dot-dot are skipped.
If the directory_iterator is advanced past the last directory entry, it becomes equal to the default-constructed iterator, also known as the end iterator. Two end iterators are always equal, dereferencing or incrementing the end iterator is undefined behavior.
If a file or a directory is deleted or added to the directory tree after the directory iterator has been created, it is unspecified whether the change would be observed through the iterator.
Member types
| Member type | Definition |
value_type
|
filesystem::directory_entry
|
difference_type
|
std::ptrdiff_t
|
pointer
|
const filesystem::directory_entry*
|
reference
|
const filesystem::directory_entry&
|
iterator_category
|
std::input_iterator_tag
|
Member functions
| constructs a directory iterator (public member function) | |
| (destructor) |
default destructor (public member function) |
| assigns contents (public member function) | |
| accesses the pointed-to entry (public member function) | |
| advances to the next entry (public member function) |
Non-member functions
| range-based for loop support (function) |
Additionally, operator== and operator!= are provided, either as members or as non-members, as required by LegacyInputIterator.
Example
#include <fstream> #include <iostream> #include <experimental/filesystem> namespace fs = std::experimental::filesystem; int main() { fs::create_directories("sandbox/a/b"); std::ofstream{"sandbox/file1.txt"}; std::ofstream{"sandbox/file2.txt"}; for(const fs::directory_entry& entry: fs::directory_iterator{"sandbox"}) std::cout << entry << '\n'; fs::remove_all("sandbox"); }
Possible output:
"sandbox/a" "sandbox/file1.txt" "sandbox/file2.txt"
See also
| an iterator to the contents of a directory and its subdirectories (class) | |
| options for iterating directory contents (enum) | |
| a directory entry (class) |