Re: [Boost-users] multi_array and variants

Subject: Re: [Boost-users] multi_array and variants
From: Larry Evans (cppljevans_at_[hidden])
Date: 2011-02-07 05:54:59

On 02/06/11 16:19, Alle Meije Wink wrote:
[snip]

> But now, when I try to compile this to see if I'm on the right track,
> my non-default constructor in which I specify the dimensionality d and
> dimensions dims (a vector, or an extents[]) it complains that
> 
> ||=== bis, Debug ===|
> /home/amwink/programs/cpp/bis/include/bisArray.hpp|46|error: ‘d’ is not a type|
> /home/amwink/programs/cpp/bis/include/bisArray.hpp|46|error: ‘dims’ is
> not a type|
> /home/amwink/programs/cpp/bis/src/bisArray.cpp|7|error: redefinition
> of ‘class bis::bisArray<T, d, dims>’|
> /home/amwink/programs/cpp/bis/include/bisArray.hpp|18|error: previous
> definition of ‘class bis::bisArray<T, d, dims>’|
> ||=== Build finished: 4 errors, 0 warnings ===|
> 
> The attached code segment is basically as far as I got. I'm not sure
> now if d and dims should be templated or not?
[snip]
Hi Alle,

Unfortunately, the code which you attached does not contain
the needed #includes.  It would help us if you would provide
a complete code example.  However, the 'not a type' errors
are because the in the CTOR:

  // initialising constructor
  bisArray(T, d, dims);

the last 2 arguments:

  d, dims

have to type.  I assume you meant:

  // initialising constructor
  bisArray(T, size_t a_dim, size_t* a_extents);

However, that's confusing me because that CTOR, I assume, is used
toe create one of the variant components, and that, according to:

  http://www.boost.org/doc/libs/1_45_0/libs
    /multi_array/doc/reference.html#multi_array

requires a compile-time value for NumDims, which, of course,
the runtime value, a_dim, is not.

So, it might help also if you provided the body of you CTOR
also to help us see what you're trying to do.

-regards,
Larry