Re: [Boost-users] How to call STL map.second in boost lambda?

From: yinglcs2_at_[hidden]
Date: 2006-02-22 14:57:15

Sorry. That works. I made a mistake myself.

--- Kevin Heifner <heifner_k_at_[hidden]> wrote:

> yinglcs2_at_[hidden] wrote:
> > I have a for loop which pass the map.second to a
> > function, like this:
> > class A;
> > typedef map<int, A*> MyMap;
> > 
> > sortY(A& a);
> > 
> > for (MyMap::iterator iter = map.begin(); iter !=
> > map.end(); ++iter) {
> > 		A *a = (*iter).second;
> > 		
> > 		sortY(*a);
> > 	}
> > 
> > how can I translate the above for() loop into
> for_each
> > and use boost lambda?
> 
> I didn't test the following, but it should work :)
> 
> #include <boost/lambda/lambda.hpp>
> #include <boost/lambda/bind.hpp>
> 
> using boost::lambda::_1;
> using boost::lambda::bind;
> 
> std::for_each(map.begin(), map.end(),
>    bind(&sortY, *bind(&MyMap::value_type::second,
> _1)));
> 
> KevinH
> -- 
> Kevin Heifner  heifner @ ociweb.com 
> http://heifner.blogspot.com
>            Object Computing, Inc. (OCI)
> www.ociweb.com
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> 

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