yank unary '+'?
KennyTM~
kennytm at gmail.com
Sun Dec 6 11:58:43 PST 2009
On Dec 7, 09 00:23, Andrei Alexandrescu wrote:
> Is there any good use of unary +? As an aside, Perl programs do use it
> occasionally for syntactic disambiguation :o).
>
> Andrei
Yes, when you want to port the Boost Spirit parser :o) (OK that's an abuse.)
Well the unary + can help to emphasize "it's a positive number", and
1.0e+10 is already a form of "unary +" (not the operator).
Removing the unary + doesn't lose much, but it doesn't gain much either,
and with it already present in all other languages, I don't see a good
reason to change it.
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