Re: [boost] a (useful?) crtp trick

Subject: Re: [boost] a (useful?) crtp trick
From: pavel (paul.cpprules_at_[hidden])
Date: 2012-08-28 12:02:06

 Mathias wrote on Tuesday, August 28, 2012 at 16:21:01:
> On 26/08/2012 14:28, pavel wrote:
>> thanks for the question
>>
>> the advantage is that you may completely ignore the tag as in
>>
>>    template<typename type>
>>    void f(const Base<type>&);

> This is also possible with the code above, since the tag is not part of
> the template parameters of Base.

the quote is out of context (or was that your intention?)

the full quote should be:

> the advantage is that you may completely ignore the tag as in
> 
>   template<typename type>
>   void f(const Base<type>&);
> 
> or you may use it straightforwardly like
> 
>   template<typename type typename tag>
>   void g(const Base<type, tag>&);
> 
> and the most important -- you may explicitly specify tag for a
> function like
> 
>   template<typename type>
>   void h1(const Base<type, tag1>&);

notice the "or" and "and" clauses

-- 
Pavel
P.S.
if you notice a grammar mistake or weird phrasing in my message
please point it out