diff options
Diffstat (limited to 'gcc-4.4.3/libstdc++-v3/doc/html/manual/bk01pt03ch08.html')
| -rw-r--r-- | gcc-4.4.3/libstdc++-v3/doc/html/manual/bk01pt03ch08.html | 45 |
1 files changed, 0 insertions, 45 deletions
diff --git a/gcc-4.4.3/libstdc++-v3/doc/html/manual/bk01pt03ch08.html b/gcc-4.4.3/libstdc++-v3/doc/html/manual/bk01pt03ch08.html deleted file mode 100644 index 26a4b75fb..000000000 --- a/gcc-4.4.3/libstdc++-v3/doc/html/manual/bk01pt03ch08.html +++ /dev/null @@ -1,45 +0,0 @@ -<?xml version="1.0" encoding="UTF-8" standalone="no"?> -<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> -<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Chapter 8. Concept Checking</title><meta name="generator" content="DocBook XSL Stylesheets V1.74.0" /><meta name="keywords" content=" ISO C++ , library " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="diagnostics.html" title="Part III. Diagnostics" /><link rel="prev" href="bk01pt03ch07s03.html" title="Cancellation" /><link rel="next" href="utilities.html" title="Part IV. Utilities" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 8. Concept Checking</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt03ch07s03.html">Prev</a> </td><th width="60%" align="center">Part III. - Diagnostics - -</th><td width="20%" align="right"> <a accesskey="n" href="utilities.html">Next</a></td></tr></table><hr /></div><div class="chapter" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="manual.diagnostics.concept_checking"></a>Chapter 8. Concept Checking</h2></div></div></div><p> - In 1999, SGI added “<span class="quote">concept checkers</span>” to their - implementation of the STL: code which checked the template - parameters of instantiated pieces of the STL, in order to insure - that the parameters being used met the requirements of the - standard. For example, the Standard requires that types passed as - template parameters to <code class="classname">vector</code> be - "Assignable" (which means what you think it means). The - checking was done during compilation, and none of the code was - executed at runtime. - </p><p> - Unfortunately, the size of the compiler files grew significantly - as a result. The checking code itself was cumbersome. And bugs - were found in it on more than one occasion. - </p><p> - The primary author of the checking code, Jeremy Siek, had already - started work on a replacement implementation. The new code has been - formally reviewed and accepted into - <a class="ulink" href="http://www.boost.org/libs/concept_check/concept_check.htm" target="_top">the - Boost libraries</a>, and we are pleased to incorporate it into the - GNU C++ library. - </p><p> - The new version imposes a much smaller space overhead on the generated - object file. The checks are also cleaner and easier to read and - understand. - </p><p> - They are off by default for all versions of GCC. - They can be enabled at configure time with - <a class="ulink" href="../configopts.html" target="_top"><code class="literal">--enable-concept-checks</code></a>. - You can enable them on a per-translation-unit basis with - <code class="literal">-D_GLIBCXX_CONCEPT_CHECKS</code>. - </p><p> - Please note that the upcoming C++ standard has first-class - support for template parameter constraints based on concepts in the core - language. This will obviate the need for the library-simulated concept - checking described above. - </p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt03ch07s03.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="diagnostics.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="utilities.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Cancellation </td><td width="20%" align="center"><a accesskey="h" href="../spine.html">Home</a></td><td width="40%" align="right" valign="top"> Part IV. - Utilities - -</td></tr></table></div></body></html> |