[boost] Re: Boost.Lambda question

From: Arkadiy Vertleyb (vertleyb_at_[hidden])
Date: 2004-04-08 04:17:34

Boost.Function does what I need.  Thanks a lot for the tip.

Arkadiy

> > I am wonderring if there is an easy way to determine the type of a
lambda
> > functor, kind of lambda-specific typeof facility.  I do realize that the
> > primary purpose of lambda is to create temporary functors to pass to STL
> > algorithms.
>
> > On the other hand, there are contexts where functors need to be
> > stored, such as in std::set, etc.
>
> I assume you mean for the comparator, not storing a set of functors.
>
> > Has anything been done by anybody in this regard?
>
> I've often used Boost.Function for this, though I'm interested in
> approaches that don't involve the function-pointer-like overhead:
>
>   typedef Some_Type SetElementType;
>   typedef boost::function< bool (const SetElementType&
>                            , const SetElementType&) >
>     SetElementComparator;
>   typedef std::set< SetElementType, SetElementComparator > SetType;
>
> Best,
>
> --
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