Re: [Boost-users] Problem binding a predicate to random_shuffle()

From: Nelis Franken (nfranken_at_[hidden])
Date: 2006-08-22 05:48:14

Thanks Jens! That works great...

-----Original Message-----
From: boost-users-bounces_at_[hidden]
[mailto:boost-users-bounces_at_[hidden]] On Behalf Of Jens Theisen
Sent: 21 August 2006 10:55 PM
To: boost-users_at_[hidden]
Subject: Re: [Boost-users] Problem binding a predicate to random_shuffle()

Nelis Franken wrote:
> Any ideas anyone?

The problem is that the temporary object returned by boost::bind doesn't 
bind to the non-const reference random_shuffle accepts.

I'm not sure if there is a nicer solution to using boost::function, as 
the return type of boost::bind is unspecified.

#include <boost/function.hpp>

void myShuffle() {
   boost::function< int (int) > rand
       = boost::bind(&Foo::customRand, this, _1);

   random_shuffle(dataVector.begin(), dataVector.end(), rand);
}

Jens

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