Subject: Re: [boost] Boost.Convert. Take 2.
From: Rob Stewart (robertstewart_at_[hidden])
Date: 2014-02-20 21:11:02
On February 20, 2014 5:48:18 PM EST, Vladimir Batov <Vladimir.Batov_at_[hidden]> wrote:
>On 02/21/2014 02:47 AM, Andrzej Krzemienski wrote:
>> Regarding "Type Requirements" section in documentation:
>> TypeOut needs to be
>> *Copy Constructible.*
>> Is it not enough to require that TypeOut be *MoveConstructible*?
>I readily admit I am shaky about new C++11 stuff... even though it's
>2014 outside... I've not had (cannot afford) any exposure to C++11 as I
>am still stuck with C++03... well, at least for 2 more months... which
>in the airline industry is more likely 6-12 months. :-(
>Still I suspect some interfaces require to be Copy Constrictible. For
> template<typename FallbackType>
> out_type value_or(FallbackType const& fallback) const
> return good_ ? value_ : fallback;
This would address your concern:
However, for non-movable types, the fallback is to copy anyway, so both should be moved.
(Sent from my portable computation engine)
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