Re: [boost] [filesystem] C++11 range-based for statement and BOOST_FOREACH support

Subject: Re: [boost] [filesystem] C++11 range-based for statement and BOOST_FOREACH support
From: Nathan Ridge (zeratul976_at_[hidden])
Date: 2012-07-12 13:39:55

> Support for the C++11 range-based for statement and BOOST_FOREACH for
> directory_iterator and recursive_directory_iterator has been added to
> trunk. This clears feature requests 5896 and 6521.
>
> The range-based for has been tested against gcc 4.6, which works, and
> against VC++2012 RC, which ICEs the compiler. The ICE has been
> reported to Microsoft.
>
> If anyone gives either C++11 range-based for or BOOST_FOREACH a try,
> I'd appreciate hearing about any problems. Both of these are new to
> me, and I'm nervous about getting the enabler free functions right.
>
> Here is what usage looks like:
>
> for (directory_entry& x : directory_iterator("."))
> {
> std::cout << " " << x.path() << "\n";
> }
>
> BOOST_FOREACH(directory_entry& x, directory_iterator("."))
> {
> std::cout << " " << x.path() << "\n";
> }

I'm a little surprised to see a function that returns a range named
"directory_iterator".

Other Boost libraries, such as Boost.Iterator and Boost.Range, distinguish
between the concepts of an iterator, which denotes a single position in a 
range, and a range, which is defined by iterators at is beginning and its
end.

Have you considered naming the function "directory_range" to be consistent
with other Boost libraries?

Otherwise, great idea!

Regards,
Nate