std::filesystem::path::begin, std::filesystem::path::end

 

C++

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自由（freestanding）與宿主（hosted）

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標準庫標頭檔案

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特性測試宏 (C++20)

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超程式設計庫 (C++11)

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執行控制庫 (C++26)

技術規範

符號索引

外部庫

 

檔案系統庫

類
filesystem::path filesystem::filesystem_error filesystem::directory_entry filesystem::directory_iterator filesystem::recursive_directory_iterator    filesystem::file_status filesystem::space_info	filesystem::file_type filesystem::file_time_type filesystem::perms filesystem::perm_options filesystem::copy_options filesystem::directory_options
函式
filesystem::absolute filesystem::canonicalfilesystem::weakly_canonical filesystem::relativefilesystem::proximate filesystem::copy filesystem::copy_file filesystem::copy_symlink filesystem::create_directory filesystem::create_directories filesystem::create_hard_link filesystem::create_symlink filesystem::create_directory_symlink filesystem::current_path filesystem::temp_directory_path	filesystem::exists filesystem::equivalent filesystem::file_size filesystem::hard_link_count filesystem::last_write_time filesystem::permissions filesystem::read_symlink filesystem::remove filesystem::remove_all filesystem::rename filesystem::resize_file filesystem::space filesystem::status filesystem::symlink_status
檔案型別
filesystem::is_block_file filesystem::is_character_file filesystem::is_directory filesystem::is_empty filesystem::status_known	filesystem::is_fifo filesystem::is_other filesystem::is_regular_file filesystem::is_socket filesystem::is_symlink

 

std::filesystem::path

成員型別
成員常量
path::native_formatpath::generic_formatpath::auto_format
成員函式
path::path path::~path path::operator= path::assign path::appendpath::operator/= path::concatpath::operator+= path::clear path::make_preferred path::remove_filename path::replace_filename path::replace_extension    path::swap path::compare path::beginpath::end	path::c_strpath::nativepath::operator string_type path::stringpath::u8stringpath::u16stringpath::u32stringpath::wstring path::generic_stringpath::generic_u8stringpath::generic_u16stringpath::generic_u32stringpath::generic_wstring path::lexically_normalpath::lexically_relativepath::lexically_proximate
路徑分解
path::root_name path::root_directory path::root_path path::relative_path path::parent_path path::filename path::stem path::extension path::empty	path::has_root_pathpath::has_root_namepath::has_root_directorypath::has_relative_pathpath::has_parent_pathpath::has_filenamepath::has_stempath::has_extension path::is_absolutepath::is_relative
非成員函式
operator==operator!=operator<operator<=operator>operator>=operator<=> (C++20 前)(C++20 前)(C++20 前)(C++20 前)(C++20 前)(C++20 起)	operator/ operator<<operator>> swap(std::filesystem::path) hash_value u8path
輔助類
hash<std::filesystem::path>	formatter<std::filesystem::path> (C++26)

 

iterator begin() const;	(1)	(C++17 起)
iterator end() const;	(2)	(C++17 起)

1) 返回指向路徑首個元素的迭代器。若路徑為空，則返回的迭代器等於 end()。

2) 返回指向路徑最後一個元素之後一位的迭代器。解引用此迭代器是未定義行為。

這對迭代器所表示的序列由以下部分組成

1. 根名（root-name）（若存在）。
2. 根目錄（root-directory）（若存在）。
3. 一系列檔名（file-name），省略任何目錄分隔符。
4. 如果路徑中最後一個檔名（file-name）之後有一個目錄分隔符，則尾後迭代器之前的最後一個元素是一個空元素。

引數

(無)

返回值

1) 指向路徑首個元素的迭代器。

2) 指向路徑末尾之後一位的迭代器

異常

可能丟擲實現定義的異常。

示例

執行此程式碼

#include <filesystem>
#include <iostream>
namespace fs = std::filesystem;
 
int main()
{
    const fs::path p = 
#   ifdef _WIN32
        "C:\\users\\abcdef\\AppData\\Local\\Temp\\";
#   else
        "/home/user/.config/Cppcheck/Cppcheck-GUI.conf";
#   endif
    std::cout << "Examining the path " << p << " through iterators gives\n";
    for (auto it = p.begin(); it != p.end(); ++it)
        std::cout << *it << " │ ";
    std::cout << '\n';
}

可能的輸出

--- Windows ---
Examining the path "C:\users\abcdef\AppData\Local\Temp\" through iterators gives
"C:" │ "/" │ "users" │ "abcdef" │ "AppData" │ "Local" │ "Temp" │ "" │
 
--- UNIX ---
Examining the path "/home/user/.config/Cppcheck/Cppcheck-GUI.conf" through iterators gives
"/" │ "home" │ "user" │ ".config" │ "Cppcheck" │ "Cppcheck-GUI.conf" │