Ron Parker <par### [at] my-dejanewscom> wrote:
: #declare A=1;
: #declare A=<1,2,3>;
: #declare B=2;
: #declare B=<4,5,6>;
: #declare C=A+B;

  In this case povray could issue an error message like "Ambiguous operands".
  Then perhaps you can typecast the operands like this:

#declare C=(vector)A+(scalar)B;

  Too complicated?-)

: But in general, why is this more useful than just putting the
: type information into the declaration?

  It's more intuitive and it saves typing.
  Even if overloadable identifiers were not good, overloadable macros should
be very handy.

-- 
main(i){char*_="BdsyFBThhHFBThhHFRz]NFTITQF|DJIFHQhhF";while(i=
*_++)for(;i>1;printf("%s",i-70?i&1?"[]":" ":(i=0,"\n")),i/=2);} /*- Warp. -*/

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