[C++-sig] Getting Boost.Python to explain itself better?

[Stefan Seefeld]

Hi Skip,

On 17.06.2016 09:37, Skip Montanaro wrote:
> I'm trying to debug an assertion error from Boost.Python, but having
> no luck. I'm not a C++ programmer, but to my eyes, it seems like my
> call should work. I'm using Boost 1.47.0 on an openSuSE 12.2 platform,
> with GCC/G++ 4.4. These parameters are fixed (that is, suggestions
> that I update any of them aren't going to fly - I am tied to those
> versions by factors outside my control). Here's a simple example,
> which used to work:

you haven't shown any code, so I can only guess, but from the error
messages I'd suspect you assume Boost.Python to automatically map
between the Python dict type and your library's std::map<std::string,
resource::variant>. There is no automatic mapping of std::map<...>. The
closest is the "map_indexing_suite"
(http://boostorg.github.io/python/doc/html/reference/topics/indexing_support.html#topics.indexing_support.class_map_indexing_suite),
but even with that you do need to explicitly specify the types to map.

HTH,
        Stefan

-- 

      ...ich hab' noch einen Koffer in Berlin...