Re: [patch] row::operator[] - template version

Warren Young wrote:
> I have tested it on both g++ on Linux and VC++ 7.1 on Windows, and it 
> seems to work.

I overlooked the fact that this will break the ABI, while the other 
patch will not.  Rather than endorse the other one, which I really don't 
like, I'm now in favor of putting this on the v3.0 wishlist, where we 
can break the ABI at will.

A solution we shouldn't overlook is simply changing the SizeType 
definition at the const_subscript_iterator level to 'int'.  Negative 
subscripts don't make sense, but the range checking in vector::at() will 
take care of this.  Then we don't need ugly overloads, and can avoid the 
risks pps brought up.

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