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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [eigen] Re: leftCol(0)
- From: Benoit Jacob <jacob.benoit.1@xxxxxxxxx>
- Date: Sat, 26 Jun 2010 08:33:09 -0400
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Both versions should have the effect of printing anything, but they
should be allowed (we try to allow zero sizes for convenience)
Can you file a bug on the tracker? No time now to fix it.
Benoit
2010/6/26 Carlos Becker <carlosbecker@xxxxxxxxx>:
> Another remark: doing std::cout << m.leftCols<0>() << std::endl; ends up in
> a segfault at compile time.
>
>
> On Sat, Jun 26, 2010 at 12:25 PM, Carlos Becker <carlosbecker@xxxxxxxxx>
> wrote:
>>
>> Hi everyone.
>> I was trying some code while writing the Block operations tutorial and
>> found that the output of the following program does not make much sense:
>> #include <Eigen/Dense>
>> #include <iostream>
>>
>> using namespace Eigen;
>>
>> int main()
>> {
>> Matrix<float,3,3> m;
>> m << 1,2,3,
>> 4,5,6,
>> 7,8,9;
>>
>> std::cout << m.leftCols(0) << std::endl;
>>
>> return 0;
>> }
>> I wonder if this is a desired behaviour. I was expecting to get a
>> compile-time error, or at least a run-time one.
>> Carlos
>