std::basic_fstream::is_open

 

C++

Язык

Понятия (концепции)

Утилиты

Строки

Контейнеры

Алгоритмы

Итераторы

Работа с числами

Ввод / вывод

Локализация

Регулярные выражения (C++11)

Атомарные примитивы (C++11)

Потоки (C++11)

 

Библиотеки ввода / вывода

I / O манипуляторов

C-стиль I / O

Буферы Original: Buffers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_streambuf

basic_filebuf

basic_stringbuf

strstreambuf (устарело)

Потоки Original: Streams The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Абстракций Original: Abstractions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

ios_base

basic_ios

basic_istream

basic_ostream

basic_iostream

Файл I / O Original: File I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_ifstream

basic_ofstream

basic_fstream

Струнный I / O Original: String I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_istringstream

basic_ostringstream

basic_stringstream

Массив I / O Original: Array I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

istrstream (устарело)

ostrstream (устарело)

strstream (устарело)

Типы Original: Types The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

streamoff

streamsize

fpos

Интерфейс Ошибка категории Original: Error category interface The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

iostream_category (C++11)

io_errc (C++11)

 

std::basic_fstream

Член функций Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_fstream::basic_fstream

basic_fstream::operator= (C++11)

basic_fstream::swap (C++11)

basic_fstream::rdbuf

Файловые операции Original: File operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_fstream::is_open

basic_fstream::open

basic_fstream::close

Не являющиеся членами функций Original: Non-member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_fstream::swap(std::basic_fstream) (C++11)

 

bool is_open() const;

Проверяет, является ли файл потока имеет соответствующий файл.

Original:

Checks if the file stream has an associated file.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Эффективно называет rdbuf()->is_open().

Original:

Effectively calls rdbuf()->is_open().

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Параметры

(Нет)

Original:

(none)

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Возвращаемое значение

true, если файл поток имеет соответствующий файл, в противном случае false

Original:

true if the file stream has an associated file, false otherwise

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

См. также

open	открывает файл и связывает его с потоком Original: opens a file and associates it with the stream The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (public функция-член)
close	закрывает соответствующий файл Original: closes the associated file The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (public функция-член)