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3  Extensions
4  
5</th><td width="20%" align="right">��<a accesskey="n" href="ext_compile_checks.html">Next</a></td></tr></table><hr /></div><div class="preface"><div class="titlepage"><div><div><h1 class="title"><a id="manual.ext.preface"></a></h1></div></div></div><p>
6  Here we will make an attempt at describing the non-Standard
7  extensions to the library.  Some of these are from older versions of
8  standard library components, namely SGI's STL, and some of these are
9  GNU's.
10</p><p><span class="emphasis"><em>Before</em></span> you leap in and use any of these
11extensions, be aware of two things:
12</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
13     Non-Standard means exactly that.
14     </p><p>
15       The behavior, and the very
16       existence, of these extensions may change with little or no
17       warning.  (Ideally, the really good ones will appear in the next
18       revision of C++.)  Also, other platforms, other compilers, other
19       versions of g++ or libstdc++ may not recognize these names, or
20       treat them differently, or...
21     </p></li><li class="listitem"><p>
22       You should know how to access these headers properly.
23     </p></li></ol></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="extensions.html">Prev</a>��</td><td width="20%" align="center"><a accesskey="u" href="extensions.html">Up</a></td><td width="40%" align="right">��<a accesskey="n" href="ext_compile_checks.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Part��III.��
24  Extensions
25  
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