Re: Struggling with bind

From: Paul Thompson (friedegg_at_[hidden])
Date: 2003-06-12 09:43:44

--- In Boost-Users_at_[hidden], "Paul Thompson" <friedegg_at_n...> 
wrote:
> --- In Boost-Users_at_[hidden], Alisdair Meredith
> <yg-boost-users_at_m...> wrote:
> > Paul Thompson wrote:
> > 
> > > I thought about (among many others)
> > > 
> > >     for_each(filenames.begin(),
> > >              filenames.end(),
> > >              bind(&CDocumentAttachments::Execute, _2, _T
("print"),
> > > false));
> > 
> > Looks good to me, but why have you changed _1 to _2?  The 
parameter you
> > are passing in this place is the same (pointer to your objects as 
found
> > by dereferencing the iterator)
> > 
> > If you change _2 to _1 I think it should work.
> 
> Yeah, I tried that, but I got 39 errors!  Hence playing with the
> placeholder - it got fewer errors.  Sounds daft, I know.
> 
> I don't have the code with me here.  I'll try some more when I get 
to
> work tomorrow.

Yes, it works fine now (using _1).  I can't think what I must have 
tried before.  Blame it on the beer.

Thanks to you guys for your help.

Paul