Re: [ublas] Default constructable vector/matrix_expression

From: Gunter Winkler (guwi17_at_[hidden])
Date: 2005-06-30 04:49:24

On Wednesday 29 June 2005 23:58, Michael Stevens wrote:
> Dear All,
>
> Does anyone know why the vector/matrix_expression class requires Default
> Constructable?

Because the derived types vector and matrix use it? Having a 
container_expression type as base type would avoid this. BTW there is no 
constructor in matrix_expression and only protected constructors in 
ublas_expression.

Another remark:
What do you think about moving ublas_expression and scalar_expression out off 
vector_expression.hpp into a new header (detail/ublas_expression.hpp or 
scalar_expression.hpp).

mfg
Gunter