std::basic_ios<CharT,Traits>::init
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C++
Input/output library
| I/O manipulators | ||||
| Print functions (C++23) | ||||
| C-style I/O | ||||
| Buffers | ||||
(C++23) | ||||
(C++98/26*) | ||||
(C++20) | ||||
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| File I/O | ||||
| String I/O | ||||
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(C++23) | ||||
(C++23) | ||||
(C++23) | ||||
(C++98/26*) | ||||
(C++98/26*) | ||||
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(C++11) | ||||
(C++11) |
std::basic_ios
| Member functions | ||||
| State functions | ||||
| Formatting | ||||
| Miscellaneous | ||||
| Protected member functions | ||||
basic_ios::init | ||||
(C++11) | ||||
(C++11) | ||||
(C++11) |
| protected: void init( std::basic_streambuf<CharT,Traits>* sb ); |
|
Sets the associated stream buffer to sb and initializes the internal state.
The postconditions are as follows:
| Element | Value |
|---|---|
| rdbuf() | sb |
| tie() | null pointer |
| rdstate() | goodbit if sb is not a null pointer, otherwise badbit |
| exceptions() | goodbit |
| flags() | skipws | dec |
| width() | 0 |
| precision() | 6 |
| fill() | widen(' ') |
| getloc() | a copy of the value returned by std::locale() |
This member function is protected: it is called by the constructors of the derived stream classes std::basic_istream and std::basic_ostream once the associated stream buffer is known. Until this function is called, every member function (including the destructor) of the default-constructed std::basic_ios invokes undefined behavior. Note that basic_ios is a virtual base class, and therefore its constructor is not called by the constructors of those directly derived classes, which is why two-stage initialization is necessary.
[edit] Parameters
| sb | - | stream buffer to associate to |
[edit] See also
| constructs the object (public member function) [edit] |
