Re: [boost] [range] concept checks break chained range adaptors

Subject: Re: [boost] [range] concept checks break chained range adaptors
From: Jürgen Hunold (jhunold_at_[hidden])
Date: 2014-06-15 10:26:42

Hi Sergey,

Am Sonntag, 15. Juni 2014, 13:20:58 schrieb Sergey Mitsyn:
> Hello,
> boost::copy forwards everything to std::copy with iterators that hold
> function objects by value. Iterator concept requires iterators to be
> default constructible, but if they hold function objects that have
> binded data they cannot be made such.

Well, the code itself is working great in 1.55.0 and before the 
aforementionend commits introducing concept checks. So Boost.Range already 
does the right things. It seems that only the new checks need some  tweaking.

> FWIW one of solutions to this problem is wrapping function object f with
> boost::regular(f), available here:
> 
> https://github.com/faithandbrave/OvenToBoost

Thanks for the pointer, anyway.

Yours,

Jürgen
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