Re: [Boost-users] identical boost expression used in different parts of the code - looking for an alias

From: Kirit Sælensminde (kirit.saelensminde_at_[hidden])
Date: 2007-10-02 12:30:45

e r wrote:
> hi
>  boost::bind(
>   &A::f,
>   _1
>  )
> 
> in different parts of my code. how can i define an alias for this
> expression?
> 
> 
> i'm thinking of using something like
> 
> some_type* fo = new boost::bind(&A::f,_1);
> 
> and use *fo in place of boost::bind(...). is this crazy? what should
> some_type be?

Normally the easiest thing to do is to put it into a boost::function object.

The correct type depends on the parameter to &A::f and the return type. 
Assuming that it is this: R A::f( B ) then something like this should work:

boost::function< R ( B ) > do_f( boost::bind( &A::f, _1 ) );

R my_r = do_f( a_B );

K