Re: trivial syntax question...

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Martin Reddy (mxr++at++dcs.ed.ac.uk)
Thu, 15 May 1997 14:22:22 +0100 (BST)

> In Performer code, sometimes I will see code segment like:
>
> (channel, data);

This does nothing - they are simply there to stop compiler warnings. The
two parameters channel and data aren't used in the function so the
compiler will usually throw a warning message. To suppress this, you just
reference the variable and do nothing with it, e.g. "(data);" just returns
the value of data and ignores it - i.e. does nothing. Most compilers will
probably be able to optimise this out anyway.

Cheers,

Martin.

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Martin Reddy SRI International, AI Center
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reddy++at++ai.sri.com Tel. +44 131 650 5164 (temp)
http://www.dcs.ed.ac.uk/~mxr Fax. +44 131 667 7209 (temp)

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