On 12/28/2010 5:39 AM, Thomas Heller wrote:
> I just saw that you added functional::at.
> I was wondering about the rationale of your decision to make it a non 
> template.
> My gut feeling would have been to have proto::functional::at<N>(seq)
> and not proto::functional::at(seq, N).

Think of the case of Phoenix placeholders, where in the index is a

  when< terminal<placeholder<_> >, _at(_state, _value) >

For the times when the index is not a parameter, you can easily do:

  _at(_state, mpl::int_<N>())

Eric Niebler
BoostPro Computing
proto mailing list

Reply via email to