| Re: [eigen] Bug in traspose |
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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [eigen] Bug in traspose
- From: "Schleimer, Ben" <bensch128@xxxxxxxxx>
- Date: Thu, 17 Jan 2008 16:48:52 -0800 (PST)
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--- Benoît Jacob <jacob@xxxxxxxxxxxxxxx> wrote:
> OK, first off I think you're right on this: we need to replace .newline() by
> operator, because of the relative priority of these operators!
>
> http://www.cplusplus.com/doc/tutorial/operators.html
>
> operator, has the lowest priority. Whatever set of operators we choose must
> have equal priorities and left-to-right associativity. The one exception is
> the first operator which may have higher priority.
>
> There is a problem with this:
>
> > Matrix2d m;
> > m <<= (1, 2),
> > (3, 4);
>
> Here the first operator, refers to the object 1 and the compiler will treat it
> as an "int". Since we can't overload operator, on a POD type, I see no way to
> make this work. Same problem with every solution you're proposing with a
> parenthesis ( before the 1.
I was thinking more about using va_args inside the operator()(...).
Then , can be overloaded to go to the next row.
I wonder how tvmet gets
m = 1, 2,
3, 4;
to work if the , operator is only overloaded in the Matrix<> class...
Cheers
Ben