En op 22 oktober 2002 sprak Gareth McCaughan:
> What's particularly embarrassing is that I *tested* it.
> How could that possibly have worked, I hear you ask?
> Simple. Excerpt from my little test program:
>
> print subst("$2, $1 and $3"), "\n";
My fault. I cut and pasted the original problem specification,
not the corrected one:
subst('$2, $1 and $3')
Sorry 'bout that.
I have confirmed (-ugene's solution as correct weight, and am
feeling very guilty whittling one stroke from:
sub subst{join'',map--$|?$_:eval,split/(\$\d+)/,$_[$|=0]}
to:
sub subst{join'',map--$|?$_:$$_,split/\$(\d+)/,$_[$|=0]}
because it was not my idea. No, I am not saying whose idea it was,
but he is not a regular golfer (to the best of my knowledge).
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