Mercurial > ~dholland > hg > ag > index.cgi
view doc/misc/html/oldclasslib/pair.html @ 11:3aa0f5a02342
Remove unused variable; fix what it was supposed to be doing.
(and document it a bit for the next time through here)
author | David A. Holland |
---|---|
date | Tue, 31 May 2022 00:54:12 -0400 |
parents | 13d2b8934445 |
children |
line wrap: on
line source
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <TITLE>Pair Class Definition</TITLE> </HEAD> <BODY BGCOLOR="#ffffff" BACKGROUND="tilbl6h.gif" TEXT="#000000" LINK="#0033CC" VLINK="#CC0033" ALINK="#CC0099"> <P> <IMG ALIGN="right" SRC="../images/agrsl6c.gif" ALT="AnaGram" WIDTH=124 HEIGHT=30 > <BR CLEAR="all"> Back to : <A HREF="../index.html">Index</A> | <A HREF="index.html">Class libraries for examples</A> <P> <IMG ALIGN="bottom" SRC="../images/rbline6j.gif" ALT="----------------------" WIDTH=1010 HEIGHT=2 > <P> <H1>Pair Class Definition</H1> <IMG ALIGN="bottom" SRC="../images/rbline6j.gif" ALT="----------------------" WIDTH=1010 HEIGHT=2 > <P> <BR> <H2>Introduction</H2> <P> <CODE> pair<class T> </CODE> is a template class that provides arithmetic and comparison operations on ordered pairs of elements of type T. Class T must implement arithmetic and comparison operators. <P> All operations are element-wise, including multiplication, division and comparisons. Using these definitions, sets of pairs are not well ordered in the mathematical sense. That is, it is possible that for pairs p and q both p < q and p > q could be false. <P> Pairs of integers are quite useful for recording and manipulating screen coordinates. <P> <BR> <H2> Constructors </H2> There are two constructors, one which takes two arguments of type T, and sets the elements of the pair appropriately. The other constructor takes no arguments, and initializes the elements to zero. <P> <BR> <IMG ALIGN="bottom" SRC="../images/rbline6j.gif" ALT="----------------------" WIDTH=1010 HEIGHT=2 > <P> <IMG ALIGN="right" SRC="../images/pslrb6d.gif" ALT="Parsifal Software" WIDTH=181 HEIGHT=25> <BR CLEAR="right"> <P> Back to : <A HREF="../index.html">Index</A> | <A HREF="index.html">Class libraries for examples</A> <P> <ADDRESS><FONT SIZE="-1"> AnaGram parser generator - examples<BR> Class libraries - Pair class definition<BR> Copyright © 1993-1999, Parsifal Software. <BR> All Rights Reserved.<BR> </FONT></ADDRESS> </BODY> </HTML>