Boost logo

Boost :

From: Beman Dawes (bdawes_at_[hidden])
Date: 2002-09-15 15:40:14

At 03:05 AM 9/15/2002, Thomas Witt wrote:

>> Why not just make directory_iterator a typedef for an iterator_adaptor?
>> Does it need additional interface beyond that of a standard iterator?
>In a way, yes. As I tried to explain in my previous posting it needs a
>that takes a path. For most of the stdlib iterators ctors aren't really
>issue, as the container classes act as iterator factories. This is
>different for directory_iterator. So we have to provide the iterator
>interface _and_ customized ctors. Thats why I said iterator_adaptor is
>not really well suited.
>With iterator_adaptor only a ctor taken the base_type is provided. As I
>tried to show in my code example there is a way to use iterator_adaptor
>and have the desired ctor, but I consider this solution a hack. In order
>to have the desired ctor(directory_iterator(path const&)) I have made
>the base type.

Your solution is clever, but I agree it is a hack.

The best solution seems at this point to just write directory_iterator
implementation by hand.

The same problem affects the experimental recursive_directory_iterator.

Note that unless I'm missing something, these are pure implementation
issues and don't affect the public Filesystem Library interface at all.

Thanks for all the suggestions and other help,


Boost list run by bdawes at, gregod at, cpdaniel at, john at