[boost] Re: non-member reset()

28 Jan 2005


      David Abrahams wrote:
...
Rob Stewart <stewart@sig.com> writes:
...
From: =?ISO-8859-1?Q?S=E9rgio_Vale_e_Pace?= <svpace.forum@gmail.com>
...
On Wed, 26 Jan 2005 16:48:41 +0100, Stefan Slapeta <stefan@slapeta.com> wrote:
...
do we have a non-member reset() somewhere? Something like
template <typename T>
void reset(T& t)
{
    std::swap(t, T());
}
(of course to be refined...)
why not :
template <typename T>
void reset(T& t)
{
   t = T();
}
swap() is typically as fast as or faster than copy assignment,
Not for many types that one might like to reset, such as pointers,
shared_ptr<T>, and integral types.
What about exception safety guarantees of assignment vs. swap? 
Personally, I'd say these are more important to think about than speed...

Regards, Daniel

[boost] Re: non-member reset()

Daniel Frey