Re: [boost] [type traits] add a set of templates to propagate constetc from one type to another?

Subject: Re: [boost] [type traits] add a set of templates to propagate constetc from one type to another?
From: Stewart, Robert (Robert.Stewart_at_[hidden])
Date: 2010-03-03 06:46:54

John Maddock wrote:
>
> > I too have needed and created propogate const (actually
> > propogate const
> > and/or volatile). I'd definitely appreciate such an addition to
> > Boost.TypeTraits.
>
> My gut feeling would be to call this "copy_cv" and it would
> do what it's name suggests, take a type and make it's
> cv-qualifiers the same as some other type.

Nice name.  The "cv" part is right on target, and "copy" is short and clear.

If one wants only const or volatile, one need only combine copy_cv with remove_volatile or remove_const, so copy_const and copy_volatile are not required.  However, since there is remove_const, remove_cv, and remove_volatile, wouldn't it be less surprising to add copy_const, copy_cv, and copy_volatile?

_____
Rob Stewart                           robert.stewart_at_[hidden]
Software Engineer, Core Software      using std::disclaimer;
Susquehanna International Group, LLP  http://www.sig.com

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