void open( const char *filename, ios_base::openmode mode = ios_base::in ); | (1) | |
void open( const std::filesystem::path::value_type *filename, ios_base::openmode mode = ios_base::in ); | (2) | (since C++17) |
void open( const std::string &filename, ios_base::openmode mode = ios_base::in ); | (3) | (since C++11) |
void open( const std::filesystem::path &filename, ios_base::openmode mode = ios_base::in ); | (4) | (since C++17) |
Opens and associates the file with name filename
with the file stream.
Calls setstate(failbit)
on failure.
Calls clear() on success. | (since C++11) |
rdbuf()->open(filename, mode | ios_base::in)
. (see std::basic_filebuf::open
for the details on the effects of that call). Overload (2) is only provided if std::filesystem::path::value_type
is not char
. (since C++17)
open(filename.c_str(), mode)
. filename | - | the name of the file to be opened | ||||||||||||||
mode | - | specifies stream open mode. It is bitmask type, the following constants are defined:
|
(none).
checks if the stream has an associated file (public member function) |
|
closes the associated file (public member function) |
|
opens a file and configures it as the associated character sequence (public member function of std::basic_filebuf<CharT,Traits> ) |
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