Re: [eigen] Visual C++ 2005 - error c2783 can't deduce template argument for type T

["Mark B" <javadlux@xxxxxxxxx>]

Vector3d test;
test.isZero();

That should reproduce the problem in Visual C++ 2005 Express Edition.
Here is the error:

1>h:\collision\eigen\vectorbase.h(579) : error C2783: 'T
Eigen::Util::epsilon(void)' : could not deduce template argument for
'T'
1>        h:\collision\eigen\util.h(79) : see declaration of
'Eigen::Util::epsilon'
1>        h:\collision\eigen\vectorbase.h(609) : while compiling class
template member function 'bool
Eigen::VectorBase<T,Derived>::isZero(const T &) const'
1>        with
1>        [
1>            T=double,
1>            Derived=Eigen::Vector<double,3>
1>        ]
1>        h:\collision\eigen\vector.h(99) : see reference to class
template instantiation 'Eigen::VectorBase<T,Derived>' being compiled
1>        with
1>        [
1>            T=double,
1>            Derived=Eigen::Vector<double,3>
1>        ]
1>        h:\collision\collmodel.h(9) : see reference to class
template instantiation 'Eigen::Vector<T,Size>' being compiled
1>        with
1>        [
1>            T=double,
1>            Size=3
1>        ]

On Fri, Oct 31, 2008 at 4:38 AM, Benoît Jacob <jacob@xxxxxxxxxxxxxxx> wrote:
> Hi,
>
> Could you paste the exact source code causing this error and compiler output?
>
> By the way, Vector3d is a typedef for Matrix<double, 3, 1>. There is no
> separate Vector class template, vectors are a special case of matrices.
>
> Cheers,
> Benoit
>
> On Friday 31 October 2008 07:25:39 Mark B wrote:
>> Hi. When trying to call some_vector.isZero() (when the type of
>> some_vector is Vector3d, which I would imagine is Vector<double, 3>) I
>> get the error c2783 can't deduce template argument for type T. Any
>> idea why? Should be an easy thing to deduce (the error output even
>> says for class 'vector<double, 3>' so obviously it knows the type
>> should be double :P) Thanks,
>>
>> Mark
>>
>> ---
>
>
>

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