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<TITLE>Programming in XPCE/Prolog: Section 2.6</TITLE><LINK REL=home HREF="index.html">
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<H2><A NAME="sec:2.6"><SPAN class="sec-nr">2.6</SPAN> <SPAN class="sec-title">Send
and get with more arguments</SPAN></A></H2>
<A NAME="sec:sendmanyargs"></A>
<P>Though the principal predicates for invoking behaviour are <A NAME="idx:send2:58"></A><A class="pred" href="sec-D.1.html#send/2">send/2</A>
and
<A NAME="idx:get3:59"></A><A class="pred" href="sec-D.1.html#get/3">get/3</A>, <font size=-1>XPCE</font>
provides an alternative using <A NAME="idx:send212:60"></A><A class="pred" href="sec-7.1.html#send/[2-12]">send/[2-12]</A>
and
<A NAME="idx:get313:61"></A><A class="pred" href="sec-D.1.html#get/3">get/[3-13]</A>.
The following goals are all identical.
<P>
<CENTER>
<TABLE BORDER=0 FRAME=void RULES=groups>
<TR VALIGN=top><TD><TT>send(Box, width(100))</TT></TD><TD><TT>send(Box,
width, 100) </TT></TD></TR>
<TR VALIGN=top><TD><TT>get(Point, distance(point(10,10), D)</TT></TD><TD><TT>get(Point,
distance, point(10,1), D) </TT></TD></TR>
</TABLE>
</CENTER>
<P>This alternative is provided for compatibility to pre-5.0 versions as
well as to support users that dislike the new-style <A NAME="idx:send2:62"></A><A class="pred" href="sec-D.1.html#send/2">send/2</A>
and <A NAME="idx:get3:63"></A><A class="pred" href="sec-D.1.html#get/3">get/3</A>.
It is realised using <A NAME="idx:goalexpansion2:64"></A><SPAN class="pred-ext">goal_expansion/2</SPAN>
and thus poses only a small compile-time overhead.
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