Namespaces
Variants
Views
Actions

std::basic_ios::init

From cppreference.com
< cpp‎ | io‎ | basic ios
Revision as of 08:09, 15 August 2013 by P12 (Talk | contribs)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
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
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()

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.

[edit] Parameters

sb - stream buffer to associate to

[edit] See also

constructs the object
(public member function) [edit]