Re: [boost] [smart_ptr] Moving cast for unique_ptr

Subject: Re: [boost] [smart_ptr] Moving cast for unique_ptr
From: Peter Dimov (lists_at_[hidden])
Date: 2015-10-07 15:45:55

Vicente J. Botet Escriba wrote:

> Just wondering if we can not make dynamic_pointer_cast to work as your 
> dynamic_moving_pointer_cast, when the parameter is a rvalue reference

Yes, that was my first thought as well.

template<class T, class U>
    unique_ptr<T> dynamic_pointer_cast( unique_ptr<U> && r ) noexcept
{
    T * p = dynamic_cast<T*>( r.get() );
    if( p ) r.release();
    return unique_ptr<T>( p );
}