Re: [Boost-users] [range] for_each and std::map of std::list

Subject: Re: [Boost-users] [range] for_each and std::map of std::list
From: Robert Jones (robertgbjones_at_[hidden])
Date: 2011-04-06 12:07:03

On Wed, Apr 6, 2011 at 3:03 PM, Mark Snelling <mark_at_[hidden]> wrote:

> Hi,
>
> Consider a map defined as...
>
> std::map< int, std::list< std::string > > my_map;
>
> I'm wondering if/how it's possible to use Boost.Range to call a function on
> each std::string in each of the lists contained in the map. I have an
> implementation below which works using a C++0x lambda function but am
> curious if this can be done purely using Boost.Range?
>
> boost::for_each(
> boost::adaptors::values( my_map),
> []( const std::list< std::string >& my_list ) { boost::for_each( my_list,
> some_func ); } );
>
> ideas anyone?
>

In the absence of C++0x lambdas I think you'd need something like
Boost.Lambda, but I guess
that's probably not interoperable with the new range stuff for nested std
algorithm invocations.

- Rob.