| Thread Previous • Date Previous • Date Next • Thread Next |
On 17/06/10 14:23, Florian Rathgeber wrote:
Hi,
I was wondering why +=, *=, etc. are overloaded in the Vector class, but
not addition of Vectors and multiplication of Vectors by scalars.
Hence I tried the following:
namespace dolfin
{
Vector operator*( double a, const Vector& v )
{
Vector res( v );
res *= a;
return res;
}
Vector operator*( const Vector& v, double a )
{
Vector res( v );
res *= a;
return res;
}
Vector operator+( const Vector& v1, const Vector& v2 )
{
Vector res( v1 );
res += v2;
return res;
}
}
but realized the construction of the return object is not possible since
the copy constructor of Vector is explicit.
I've just pushed a change which removes 'explicit' from all the linear algebra copy constructors.
Garth
Is that a design decision that this is not supposed to be possible? I realize that creating a temporary Vector can be quite expensive. Florian _______________________________________________ Mailing list: https://launchpad.net/~dolfin Post to : dolfin@xxxxxxxxxxxxxxxxxxx Unsubscribe : https://launchpad.net/~dolfin More help : https://help.launchpad.net/ListHelp
| Thread Previous • Date Previous • Date Next • Thread Next |
