Re: template question

From:
"Igor Tandetnik" <itandetnik@mvps.org>
Newsgroups:
microsoft.public.vc.language
Date:
Tue, 20 May 2008 15:15:00 -0400
Message-ID:
<uFyNO3quIHA.1504@TK2MSFTNGP05.phx.gbl>
Mike King <emailMK@excite.com> wrote:

I'm getting the following errors. Can someone help me.

error C2327: 'Graph<N>::vertex' : is not a type name, static, or
enumerator error C2065: 'vertex' : undeclared identifier

template <unsigned int N>
struct Graph
{
  struct Set {
     unsigned char vertex_index[N];
     unsigned char IsMarked ( );
  };

  vector<unsigned char> vertex;
};

template <unsigned int N> unsigned char Graph<N>::Set::IsMarked ( ) {
  return IsMarked<N-1>() | vertex[ vertex_index[N] & 0x7F ];


IsMarked is not a template, IsMarked<N-1> shouldn't compile.

IsMarked is a method of Graph<N>::Set. vertex is not a member of Set.
Which instance of Graph<N> do you expect vertex member to come from?

vertex_index is an array of N elements, numbered 0 through N-1.
vertex_index[N] reference is out of bounds.
--
With best wishes,
    Igor Tandetnik

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necessarily a good idea. It is hard to be sure where they are going to
land, and it could be dangerous sitting under them as they fly
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