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std::basic_ios::init

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< cpp‎ | io‎ | basic ios
Revision as of 21:52, 2 November 2012 by P12bot (Talk | contribs)

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
Template:rlpf sb
Template:rlpf NULL
Template:rlpf goodbit if sb is not NULL, otherwise badbit
Template:rlpf goodbit
flags() skipws | dec
width() 0
precision() 6
Template:rlpf 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 (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.

Parameters

sb - stream buffer to associate to

See also

Template:cpp/io/basic ios/dcl list constructor