NAME¶

std::basic_ofstream::is_open - std::basic_ofstream::is_open

Synopsis¶

bool is_open() const;

Checks if the file stream has an associated file.

Effectively calls rdbuf()->is_open().

Parameters¶

(none)

Return value¶

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

Example¶

This section is incomplete
Reason: no example

Defect reports

The following behavior-changing defect reports were applied retroactively to
previously published C++ standards.

DR Applied to Behavior as published Correct behavior
LWG 365 C++98 is_open was not declared with const qualifier declared with const
qualifier

See also¶

open opens a file and associates it with the stream
(public member function)
close closes the associated file
(public member function)

Category:¶

* Todo no example