rs.
</P>

<A NAME="stream_is_open"></A>
<H4><CODE>stream::is_open</CODE></H4>
<PRE>    <SPAN CLASS="keyword">bool</SPAN> <B>is_open</B>() <SPAN CLASS="keyword">const</SPAN>;</PRE>
    
<P>Returns true if there is an instance of the Device <CODE>T</CODE> associated with <CODE>this</CODE> instance of <CODE>stream</CODE>.</P>

<A NAME="stream_close"></A>
<H4><CODE>stream::close</CODE></H4>
<PRE>    <SPAN CLASS="keyword">void</SPAN> <B>close</B>();</PRE>
    
<P>
    Disassociates from <CODE>this</CODE> instanc