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<html><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><!--Converted with jLaTeX2HTML 2002 (1.62) JA patch-1.4patched version by: Kenshi Muto, Debian Project.LaTeX2HTML 2002 (1.62),original version by: Nikos Drakos, CBLU, University of Leeds* revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan* with significant contributions from: Jens Lippmann, Marek Rouchal, Martin Wilck and others --><HTML><HEAD><TITLE>3.4.1.0.2 Deletion of TclObjects</TITLE><META NAME="description" CONTENT="3.4.1.0.2 Deletion of TclObjects"><META NAME="keywords" CONTENT="everything"><META NAME="resource-type" CONTENT="document"><META NAME="distribution" CONTENT="global"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"><META NAME="Generator" CONTENT="jLaTeX2HTML v2002 JA patch-1.4"><META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css"><LINK REL="STYLESHEET" HREF="everything.css" tppabs="http://www.isi.edu/nsnam/ns/doc/everything.css"><LINK REL="previous" HREF="node19.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node19.html"><LINK REL="up" HREF="node18.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node18.html"><LINK REL="next" HREF="node21.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node21.html"></HEAD><BODY ><!--Navigation Panel--><A NAME="tex2html1440" HREF="node21.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node21.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html1434" HREF="node18.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node18.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html1430" HREF="node19.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node19.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html1436" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html"><IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="file:/usr/share/latex2html/icons/contents.png"></A> <A NAME="tex2html1438" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html"><IMG WIDTH="43" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="index" SRC="file:/usr/share/latex2html/icons/index.png"></A> <BR><B> Next:</B> <A NAME="tex2html1441" HREF="node21.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node21.html">3.4.2 Variable Bindings</A><B> Up:</B> <A NAME="tex2html1435" HREF="node18.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node18.html">3.4.1 Creating and Destroying</A><B> Previous:</B> <A NAME="tex2html1431" HREF="node19.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node19.html">3.4.1.0.1 Creating TclObjects</A>   <B> <A NAME="tex2html1437" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html1439" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html">Index</A></B> <BR><BR><!--End of Navigation Panel--><H4><A NAME="SECTION02141020000000000000">3.4.1.0.2 Deletion of TclObjects</A></H4>The <TT>delete</TT> operationdestroys the interpreted object, and the corresponding shadow object.For example,[scheduler]use-scheduler../ns-2/ns-lib.tclSimulator::use-scheduleruses the <TT>delete</TT> procedure to remove the default list scheduler,and instantiate an alternate scheduler in its place.<PRE> Simulator instproc use-scheduler type { $self instvar scheduler_ delete scheduler_ # first delete the existing list scheduler; set scheduler_ [new Scheduler/$type] }</PRE><P>As with the constructor, the object destructor must call the destructorfor the parent class explicitly as the very last statement of the destructor.The TclObject destructorwill invoke the instance procedure <TT>delete-shadow</TT>,that in turn invokes the equivalent compiled method../Tcl/Tcl.ccTclClass::delete_shadowto destroy the shadow object.The interpreter itself will destroy the interpreted object.<P><BR><HR><ADDRESS>2003-09-23</ADDRESS></BODY></HTML>⌨️ 快捷键说明
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