c++boost.gif -> boost.png replacement

[SVN r25573]
This commit is contained in:
Aleksey Gurtovoy
2004-10-05 15:45:52 +00:00
parent 24c5f92413
commit 1412c04b24

View File

@ -9,7 +9,7 @@
</HEAD>
<BODY BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#800080">
<H2><IMG SRC="../../../c++boost.gif" WIDTH="276" HEIGHT="86">Header &lt;<A
<H2><IMG SRC="../../../boost.png" WIDTH="276" HEIGHT="86">Header &lt;<A
HREF="../../../boost/optional.hpp">boost/optional.hpp</A>&gt; </H2>
<H2>Contents</H2>
@ -115,7 +115,7 @@ if ( p.second )
One of the typical ways in which this has been historically
dealt with is via a special value: EOF,npos,-1, etc... This is equivalent to adding
the special value to the set of possible values of a given type. This super set of
T plus some <i>nil_t</i>&mdash;were nil_t is some stateless POD<EFBFBD>can be modeled in modern
T plus some <i>nil_t</i>&mdash;were nil_t is some stateless POD-can be modeled in modern
languages as a <b>discriminated union</b> of <code>T</code> and <code>nil_t</code>.
Discriminated unions are often called <i>variants</i>. A variant has a <i>current type</i>,
which in our case is either <code>T</code> or <code>nil_t</code>.<br>