Re: [Boost-users] Boost.lamba compile errror....

29 Mar 2009


      AMDG

Joost Kraaijeveld wrote:
...
I want to sort a Matrix of Vectors according to their difference in
length to some arbitrary Vector. e.g:
template< typename T>
struct MatrixVector : std::vector< T >
{
  ...
  double length() const;
  MatrixVector<T> difference(const MatrixVector< T>& rhs) const;
  ...
}
<snip>
std::sort(	matrix.begin(),
      matrix.end(),
      boost::lambda::bind(&Vector::difference, boost::lambda::_1, observation).length()
      <
      boost::lambda::bind(&Vector::difference, boost::lambda::_2, observation).length()
   );
You have to use bind for length exactly like you used bind for
difference.

In Christ,
Steven Watanabe