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    CWG Issue 999</TITLE>
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<P><EM>This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21
  Core Issues List revision 118b.
  See http://www.open-std.org/jtc1/sc22/wg21/ for the official
  list.</EM></P>
<P>2025-09-28</P>
<HR>
<A NAME="999"></A><H4>999.
  
&#8220;Implicit&#8221; or &#8220;implied&#8221; object argument/parameter?
</H4>
<B>Section: </B>12.2&#160; [<A href="https://wg21.link/over.match">over.match</A>]
 &#160;&#160;&#160;

 <B>Status: </B>CD2
 &#160;&#160;&#160;

 <B>Submitter: </B>James Widman
 &#160;&#160;&#160;

 <B>Date: </B>20 November, 2009<BR>


<P>[Voted into WP at March, 2010 meeting.]</P>



<P>The terminology used to refer to the parameter for
<TT>this</TT> and its corresponding argument is inconsistent,
sometimes using &#8220;implied&#8221; and sometimes
&#8220;implicit.&#8221; It would be easier to search the text of
the Standard if this usage were made regular.</P>

<P><B>Proposed resolution (February, 2010):</B></P>

<OL>
<LI><P>Change the index to refer to
&#8220;implicit object parameter&#8221; and &#8220;implied object
argument&#8221; instead of the current permutations of these
terms.</P></LI>

<LI><P>Change 12.2 [<A href="https://wg21.link/over.match#1">over.match</A>] paragraph 1 as follows:</P></LI>

<BLOCKQUOTE>

...how well (for non-static member functions) the object matches
the <DEL>implied</DEL> <INS>implicit</INS> object parameter...

</BLOCKQUOTE>

<LI><P>Change 12.2.2 [<A href="https://wg21.link/over.match.funcs#4">over.match.funcs</A>] paragraph 4 as follows:</P></LI>

<BLOCKQUOTE>

...For conversion functions, the function is considered to be a
member of the class of the <DEL>implicit</DEL> <INS>implied</INS>
object argument for the purpose of defining the type of the
implicit object parameter...

</BLOCKQUOTE>

<LI><P>Change the footnote in 12.2.4 [<A href="https://wg21.link/over.match.best">over.match.best</A>]
bullet 1.1 as follows:</P></LI>

<UL><LI>[<I>Footnote:</I> If a function is a static member
function, this definition means that the first argument, the
implied object <DEL>parameter</DEL> <INS>argument</INS>, has no
effect in the determination of whether the function is better or
worse than any other function. &#8212;<I>end
footnote</I>]</LI></UL>

</OL>

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