std::basic_filebuf<CharT,Traits>::is_open - cppreference.com (original) (raw)

Returns true if the most recent call to open() succeeded and there has been no call to close() since then.

[edit] Parameters

(none)

[edit] Return value

true if the associated file is open, false otherwise.

[edit] Notes

This function is typically called by std::basic_fstream::is_open().

[edit] Example

Output:

direct call: true through streambuf: true through fstream: true

[edit] See also

| | opens a file and configures it as the associated character sequence (public member function) [edit] | | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | | flushes the put area buffer and closes the associated file (public member function) [edit] |