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[SVN r12612]
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Vesa Karvonen
2002-01-31 21:52:46 +00:00
parent b9f6fe1795
commit 3b7418f9ce
10 changed files with 51 additions and 128 deletions
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14
doc/tutorial.htm
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@ -15,8 +15,8 @@
<li><a href="#Techniques">Preprocessor Metaprogramming Techniques</a>
<ul>
<li><a href="#Local Macro">Use a Local Macro to avoid small scale repetition</a></li>
<li><a href="#UNUSED">Use BOOST_PP_EMPTY() as an unused parameter in Local Macro
instantiations</a></li>
<li><a href="#UNUSED">Use BOOST_PP_EMPTY as an unused parameter in Local
Macro instantiations</a></li>
<li><a href="#CAT">Use BOOST_PP_CAT instead of ## when necessary</a></li>
<li><a href="#STRINGIZE">Use BOOST_PP_STRINGIZE instead of # whenever necessary</a></li>
<li><a href="#ENUM_PARAMS">Avoid O(N) repetition on lists in general</a></li>
@ -154,21 +154,21 @@ the line continuation operator when they are aligned.</P>
metaprogramming.</P>
<HR>
<P><B><a name="UNUSED"></a><a href="examples_preprocessed.htm#UNUSED">EXAMPLE</a>:</B>
Use BOOST_PP_EMPTY() as an unused parameter in Local Macro instantiations</P>
Use BOOST_PP_EMPTY as an unused parameter in Local Macro instantiations</P>
<blockquote>
<pre>#define BOOST_PP_DEF(CV) \
template&lt;class base&gt; \
CV typename implement_subscript_using_begin_subscript&lt;base&gt;::value_type&amp;\
CV() typename implement_subscript_using_begin_subscript&lt;base&gt;::value_type&amp;\
implement_subscript_using_begin_subscript&lt;base&gt;::operator[]\
( index_type \
i \
) CV \
) CV() \
{ return base::begin()[i];\
}
BOOST_PP_DEF(BOOST_PP_EMPTY())
BOOST_PP_DEF(const)
BOOST_PP_DEF(BOOST_PP_EMPTY)
BOOST_PP_DEF(const BOOST_PP_EMPTY)
#undef BOOST_PP_DEF
</pre>
</blockquote>