protected member function
void move (ios& x);void move (ios&& x);
Transfers all internal members of x to
*this, except the associated stream buffer (rdbuf returns a null pointer after the call).
x is left in an unspecified but valid state, except that it is not tied (tie returns always a null pointer) and its associated stream buffer is unchanged (rdbuf returns the same as before the call).
Derived classes can call this function to implement move semantics.
- Stream object whose members are moved to *this.
Modifies both stream objects (
*this and x).
Concurrent access to any of these stream objects may cause data races.
Basic guarantee: if an exception is thrown, both streams are in a valid state.
- Swap internals (protected member function)