Re: [boost] Boost.RangeEx: contains?

Subject: Re: [boost] Boost.RangeEx: contains?
From: Eric Niebler (eric_at_[hidden])
Date: 2009-02-23 16:19:57

Thorsten Ottosen wrote:
> Giovanni Piero Deretta skrev:
> 
>> If I understand the documentation correctly, you can do
>> boost::find<boost::return_found_end>(rng | filtered(pred)) to get
>> exactly what you want. I find this very useful, but the syntax is a
>> bit verbose.

Me too.

> Yeah, I guess getting the specification right is more important first.
> 
> As for syntax, I guess we could maybe do something like
> 
>   boost::find[_f,_e]( rng | filtered );
> 
> Then, other return ranges could be specified in this EDSL as
> 
>   boost::find[_f+_1,e_]( rng | filtered );
>   boost::find[_f-_1,e_]( rng | filtered );
>   boost::find[_b,_f+_1]( rng | filtered );
>   boost::find[_b,_f]( rng | filtered );
>   boost::find[_b,_f+_1]( rng | filtered );

Interesting! That's really not half bad.

> and perhaps even allow
> 
>   boost::find[_b+_next(n),_f]( rng | filtered );

Whoa. That could make it too easy to create invalid ranges, but way to 
think outside the box!

-- 
Eric Niebler
BoostPro Computing
http://www.boostpro.com