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From: Douglas Gregor (gregod_at_[hidden])
Date: 2003-08-26 07:58:46

On Monday 25 August 2003 10:21 pm, Darren Cook wrote:
> Thanks for the reply. I can almost match that up to the parts in the while
> loop, except mention of "list" is missing. Should it be:
> boost::bind(&Points::add, &list,
> boost::bind(&Info::key,
> boost::bind(&InfoContainer::get, &cs, _1))));

Yes, that's correct.

> BTW, I was hoping I'd be able to do something like this:
> std::for_each(c->points.begin(),c->points.end(),
> list.add(cs.get( _1 )->key)
> );

This is why we want lambda support in the language :)

> But after some experiments with boost::lambda I see why this isn't
> possible. I think if just one call to bind is possible then it is worth it,
> but when bind is required 2 or more times, falling back to a while loop or
> a functor seems better. Is anyone else using a similar guideline?
> Darren

I still find the bind/lambda versions less error-prone than writing the
equivalent (small) for/while loop, but I tend to put the lambda expression
that I really want to write in a comment.


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