[C++-sig] Re: vector_indexing_suite override question

[Neal D. Becker]

Joel de Guzman wrote:

> Neal D. Becker wrote:
> 
>> I'm trying to wrap my new Ring class, which is a vector-like class.  I
>> was hoping to use vector_indexing_suite but override one operator.
>> 
>> template<class Container>
>> struct my_indexing_suite : public vector_indexing_suite<Container> {
>>   typedef typename vector_indexing_suite<Container>::index_type
>>   index_type;
>> 
>>    static index_type
>>    convert_index(Container& container, PyObject* i_) {
>>      throw ("help");
>>    }
>> };
> 
> Hi Neal,
> 
> Try informing vector_indexing_suite about your class:
> 
>      struct my_indexing_suite :
>          vector_indexing_suite<Container, false, my_indexing_suite>
> 

Thanks!  That did the trick.  I would have never guessed this.  The use of
CRTP here is beyond my understanding.

I suggest adding an example to the documentation.

Thanks again.