Re: [boost] ASIO into the standard

Subject: Re: [boost] ASIO into the standard
From: Daniel James (dnljms_at_[hidden])
Date: 2014-07-12 08:40:26

On 12 July 2014 12:40, Niall Douglas <s_sourceforge_at_[hidden]> wrote:
> On 12 Jul 2014 at 10:20, Daniel James wrote:
>
>> > I have been lazy as it's test code, and implemented a move assignment
>> > like this for an internal item_type due to value_type.first being
>> > const:
>>
>> I move the nodes over when possible (when the allocators propagate on
>> move or are equal), but copy the key otherwise.
>
> How can you copy the key if it's const? It seemed to me, unless I
> have missed something, that I need to do an allocator destroy
> followed by at least an allocator copy construct as the key is const?

That's what I do. I've no idea what other implementations do.