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Subject: Re: [boost] [Range] New I/O functions for ranges
From: Rob Stewart (robertstewart_at_[hidden])
Date: 2014-10-16 05:30:18

On October 15, 2014 7:38:37 PM EDT, Indiana <[hidden]> wrote:
> I decided to take the opportunity to examine a
>possibility that a couple people have asked about: whether or not these
>C++11 facilities can be made available to C++98 code. Looking into that
>possibility is what's kept me occupied recently.
>That's where I hit a little snag.
>It turns out is probably *possible* to implement the facilities in
>C++98... however, it is impossible to do so in a way that guarantees
>safety. The problem is that C++98 has no way to prevent you from
>a temporary to a function except by taking the argument by non-const
>(lvalue) reference, which is too restrictive to help in this case.

[snip rationale]

>So unless anyone objects, I'm going to go ahead and make this "RangeIO"
>library require C++11. (Specifically, I'm going to make it require
>rvalue references - I'm not going to use any more C++11 functionality
>than is absolutely necessary, so no auto or non-static member
>initializers, etc.. For example, I will have it use
>std::initializer_list, but only if BOOST_NO_CXX11_HDR_INITIALIZER_LIST
>is not defined.)

I see no problem with that.


(Sent from my portable computation engine)

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