[boost] Re: memcpy_copyable<> and memcpy_moveable<> type traits

From: David Abrahams (dave_at_[hidden])
Date: 2003-08-25 07:57:15

"Pavel Vozenilek" <pavel_vozenilek_at_[hidden]> writes:

> In many cases using memcpy() is faster than copying array of objects one by
> one. NTL (http://www.ntllib.org/) claims huge performance gains over STL
> using it.
>
> Type traits library may be extended with:
>  - memcpy_copyable<> and
>  - memcpy_moveable<>
>
> These traits will be specialised for primitive types, pointers,
> std::complex, etc. and users will be able to define then for their own
> types. Some types may be moveable but not copyable (e.g. typical
> std::string).
>
> Containers and algorithms then can take advantage of memcpy() where
> possible.
>
> While it is possible for each individual library define such a traits,
> having them in Boost.TypeTraits would make them (pseudo)standard.

see boost::is_POD.

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com