std::basic_ios<CharT,Traits>:: init
|
protected
:
void init ( std:: basic_streambuf < CharT,Traits > * sb ) ; |
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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.
Parameters
| sb | - | stream buffer to associate to |
See also
|
constructs the object
(public member function) |