Re: [boost] [utility] rvalue support in value_initialized

Subject: Re: [boost] [utility] rvalue support in value_initialized
From: Claas H. Köhler (claas.koehler_at_[hidden])
Date: 2011-09-15 03:34:57

Principially I would like to contribute. I have to admit though, that I 
have never contributed to boost before.

In my oppinion it should suffice to add move constructors/ move 
assignment to /utility/value_init.hpp, which I could do.

How do we go on from there? Shall I submit the modified header file to 
this mailing list for review or what is the usual procedure?

Regards
Claas

On 09/14/2011 06:06 PM, Dave Abrahams wrote:
>
> on Wed Sep 14 2011, "Claas H. Köhler"<claas.koehler-AT-dlr.de>  wrote:
>
>> Hi everybody!
>>
>> Recently I encountered a problem using the std:::unique_ptr within
>> boost::spirit. The reason is apparently that value_initialized does
>> not support rvalue assignment. Are there any plans to implement move
>> semantics into value_initialized? Mainly I would be interested in
>> making something like this work:
>>
>> std::unique_ptr<T>  a= boost::get( boost::value_initialized<
>> std::unique_ptr<T>  >() );
>>
>> Currently this fails due to the fact, that unique_ptr can be moved but
>> not copied.
>
> No plans as far as I know, but I'm sure a patch would be welcome.
>