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std::filesystem::begin(directory_iterator), std::filesystem::end(directory_iterator)

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C++
 
Filesystem library
Classes
Functions
File types
 
std::filesystem::directory_iterator
Member functions
Non-member functions
begin(std::filesystem::directory_iterator)end(std::filesystem::directory_iterator)
 
Defined in header <filesystem>
directory_iterator begin( directory_iterator iter ) noexcept;
 (1) (since C++17)
directory_iterator end( directory_iterator ) noexcept;
 (2) (since C++17)
1) Returns iter unchanged.
2) Returns a default-constructed directory_iterator, which serves as the end iterator. The argument is ignored.

These non-member functions enable the use of directory_iterators with range-based for loops and make directory_iterator a range type(since C++20).

Contents

[edit] Parameters

iter - a directory_iterator

[edit] Return value

1) iter unchanged.
2) End iterator (default-constructed directory_iterator).

[edit] Example

Run this code
#include <filesystem>
#include <fstream>
#include <iostream>
namespace fs = std::filesystem;
 
int main()
{
    fs::create_directories("sandbox/a/b");
    std::ofstream("sandbox/file1.txt");
    std::ofstream("sandbox/file2.txt");
    for (auto& p : fs::directory_iterator("sandbox"))