std::experimental::filesystem::directory_iterator::directory_iterator
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                    < cpp | experimental | fs | directory iterator
                    
                                                            
                    |   directory_iterator();  | 
(1) | (filesystem TS) | 
|   explicit directory_iterator( const path& p );  | 
(2) | (filesystem TS) | 
|   directory_iterator( const path& p, error_code& ec );  | 
(3) | (filesystem TS) | 
|   directory_iterator( const directory_iterator& ) = default;  | 
(4) | (filesystem TS) | 
|   directory_iterator( directory_iterator&& ) = default;  | 
(5) | (filesystem TS) | 
Constructs a new directory iterator.
1) Constructs the end iterator.
2) Constructs a directory iterator that refers to the first directory entry of a directory identified by p. If p refers to a non-existing file or not a directory, returns the end iterator.
Parameters
| This section is incomplete | 
Exceptions
1) 
noexcept specification:  
noexcept
  2) filesystem_error if an error occurs. The exception object is constructed with p as an argument.
3) 
noexcept specification:  
noexcept
  Notes
To iterate over the current directory, construct the iterator as directory_iterator(".") instead of directory_iterator("").