std::basic_ios::init
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| protected: void init( std::basic_streambuf<CharT,Traits>* sb ); |
||
设置相关的数据流缓冲
sb并初始化内部状态.原文：
Sets the associated stream buffer to
sb and initializes the internal state.后置条件如下：
| Element | Value |
|---|---|
rdbuf() |
sb
|
tie() |
NULL |
rdstate() |
goodbit if sb is not NULL, otherwise badbit
|
exceptions() |
goodbit
|
| flags() | skipws | dec |
| width() | 0 |
| precision() | 6 |
fill() |
widen(' ') |
| getloc() | a copy of the value returned by std::locale() |
这个成员函数是被保护的，它被称为派生的流类的构造函数被称为std::basic_istreamstd::basic_ostream后，相关的数据流缓冲。这个函数被调用之前，的默认构造std::basic_ios的每一个成员函数，（以外的析构函数）调用未定义的行为。需要注意的是
basic_ios是一个虚基类，因此它的构造函数不调用的构造函数直接派生类，这就是为什么两个阶段的初始化是必要的.原文：
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 (other than 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.[编辑] 参数
| sb | - | 关联到流缓存器
|
[编辑] 另请参阅
| 构造对象 （公共成员函数） | |
