Re: [boost] [function types] New tag type logic

From: Tobias Schwinger (tschwinger_at_[hidden])
Date: 2005-06-27 17:50:37

David Abrahams wrote:
> Rob Stewart <stewart_at_[hidden]> writes:
> 
> 
>>>   When classifying types, it is often neccessary to match supersets of
>>>   possibilities for one aspect:
>>>
>>>   The most important case is to match all possibilities which means in fact to
>>>   ignore that aspect (the names of the corresponding aspect tags are prefixed with
>>>   "unspecified" for this case).
>>
>>   When classifying types, it is often necessary to match against
>>   any of several aspects.  The most important case is to match
>>   all possibilities.  In other words, to ignore that aspect.
>>   That case is handled by the tag named "unspecified_" plus the
>>   aspect name).
> 
> 
> I can't understand either phrasing.
> 

With or without its context (five levels up the thread)?