Re: [boost] wrong typedef name in boost::_mfi::[c]mf0

From: Peter Dimov (pdimov_at_[hidden])
Date: 2001-11-23 09:28:24

From: "Aleksey Gurtovoy" <alexy_at_[hidden]>
> Peter Dimov wrote:
> > > I would check in the fix myself ('cause I need it :),
> > 
> > Out of curiosity, why do you need it?
> 
>     struct something
>     {
>         int id() const;
>     };
> 
>     mtn::vector<something*> some_things;
>     mtn::vector<std::string> result(mtn::transformed_seq(
>           some_things
>         , boost::compose_f_gx(
>                 std::ptr_fun(mtn::to_string)
>               , boost::mem_fn(&something::id)
>               )
>         ));

Why not

boost::bind(mtn::to_string, boost::bind(&something::id, _1))

?

> > Impoliteness aside, making changes to other libraries without 
> > warning has an additional downside: if the library doesn't 
> > pass the regression tests, the failure gets attributed to you, 
> > although it might be a prior change that caused the test to fail.
> 
> You got me puzzled here. Could you explain how does the above work? :)

Hm. What might happen is this:

* I make a change to mem_fn.hpp.
* You make a change to mem_fn.hpp.
* mem_fn_test.cpp fails.
* You get blamed for the failure even though it might be my fault.

So it's best to coordinate updates. ;-)

--
Peter Dimov
Multi Media Ltd.