adding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function int exists (</td><td class=PType nowrap>KEY&nbsp;</td><td class=PParameter nowrap>key</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Returns 1 if a item with the given <i>key</i> exists in the pool, 0 otherwise.</div></div><div class=CToolTip id="tt11"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prot