Re: [Boost-users] Re: transform_iterator and lambda functors

From: Rodrigo de Salvo Braz (braz_at_[hidden])
Date: 2004-11-22 14:15:19

On Mon, 22 Nov 2004, David Abrahams wrote:

> Because often the result type depends on the argument type that is
> actually passed:
>
>          (_1 + 3)(4)
>
> vs.
>
>          (_1 + 3)(static_cast<char const*>("hello"))

But isn't it the case that any instantiated functor object will have a
well-defined result_type? In your examples it seems '(_1 + 3)' would be
instantiated to different types.

Anyway, I guess a better solution to my particular problem would be for
make_transform_iterator to be able to receive a result type and make an
adaptable functor out of any UnaryFunction, right?

Thanks,

Rodrigo