Re: [boost] ublas::vector and stl::map

From: Douglas Gregor (gregod_at_[hidden])
Date: 2003-05-05 14:23:17

On Monday 05 May 2003 03:07 pm, daniel wrote:
> int main(void)
> {
>    boost::numeric::ublas::vector<int> r(2);
>    map<int,IntVector> m;
>
>    m[0] = r;
>
>    return 0;
> }

The expression m[0] uses the default constructor of ublas::vector<int> to 
build an object to be returned by reference (so that the '= r' assigns to a 
propertly constructed object). However, the default constructor builds a 
vector with zero arguments and you are trying to assign to that vector 
another vector with 2 arguments.

        Doug