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std::{{{1}}}::is_open

From cppreference.com


bool is_open();
(until C++11)
bool is_open() const;
(since C++11)

Checks if the file stream has an associated file.

Effectively calls rdbuf()->is_open().

Contents

[edit] Parameters

(none)

[edit] Return value

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

[edit] Example

[edit] See also

opens a file and associates it with the stream
(public member function of std::{{{1}}}) [edit]
closes the associated file
(public member function of std::{{{1}}}) [edit]