Re: [boost] [typeof] registration question

Subject: Re: [boost] [typeof] registration question
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2012-03-25 23:25:29

AMDG

On 03/25/2012 12:33 PM, Cromwell Enage wrote:
>> In emulation mode, given the following definition:
> 
>>
>> template <typename Container>
>> struct some_metafunction
>> {
>>     typedef BOOST_TYPEOF_TPL(
>>         Container().insert(
>>             typename Container::iterator()
>>           , typename Container::value_type()
>>         )
>>     ) type;
>> };
>>
>>
>> Which of the following types need to be registered?
>>
>> 1. The argument passed as `Container`
>> 2. The result of `typename Container::iterator`
>> 3. The result of `typename Container::value_type`
> 
> Almost forgot:
> 
> 4. The result type of the expression passed into `BOOST_TYPEOF_TPL`.
> 

(4) only.  BOOST_TYPEOF doesn't inspect
the contents of the expression.  Only
its result.

In Christ,
Steven Watanabe