Re: [boost] iterator_adaptor policies

From: David Abrahams (david.abrahams_at_[hidden])
Date: 2002-01-31 18:00:59

----- Original Message ----- 
From: "witt_ive" <witt_at_[hidden]>

> 
> The default_iterator_policies member often take the iterator_adaptor
> argument by const reference. Doesn't this introduce uneccessary 
> tempories?
> 
> As in:
> 
> template <class IteratorAdaptor>
> typename IteratorAdaptor::reference dereference(const 
> IteratorAdaptor& x) const
>         { return *x.base(); }
> 
> Would mean get a copy of base (base() const is used) and dereference 
> that.

????
The defintion of base()const is:

    base_type const& base() const { return m_iter_p.first(); }

Where's the copy? Am I missing something here?