From: "Thomas B." <tpreal@...>
Date: 2008-10-10T02:12:25+09:00
Subject: Re: Bug in Vector class?

Dave Baldwin wrote:
> The Vector class doesn't seem to have any idea that it is representing
> a row or column vector and as the class stands now a vector * matrix
> will always fail.

Vector.elements([1,2,3])*Matrix.identity(1)
#=> Matrix[[1], [2], [3]]

Of course it's not much of a useful operation, but for me it's evident 
from it that a vector assumes itself to be a vertical matrix each time 
it is required to behave like a matrix.

And now, what will be the result of the above operation if, as you want, 
a vector would auto-transpose when sent * with a matrix? A row or a 
column matrix?  For me, this proves that your idea is inconsistent. It 
is not true that vector*matrix operation is never possible, so we 
shouldn't automagically make it possible even if it is not. It wouldn't 
make debugging any easier.

TPR.
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