Re: [Boost-users] [boost-users][hash] adding hash_value to boost namespace(s)?

From: Daniel James (daniel_james_at_[hidden])
Date: 2008-06-17 18:23:28

On 17/06/2008, Igor R <boost.lists_at_[hidden]> wrote:
>
>  I'd like to define hash_value() for some types defined in Boost, in
>  order to use those types in hashed containers. It seems that the only
>  way to do this is to define hash_value() in namespace boost, or the
>  inner namespaces (where the desired type is defined) - isn't it?

You could create a new type that wraps the boost type in another
namespace, so that you can define hash_value in that namespace - but
that might be a lot of effort.

Or you could just use your own hash function.

> Is this legal?

It's a grey area ;). It's up to your judgement - I expect you
understand the issues. I don't think we should be too precious about
this. After all, boost is open source.

Also, please submit a feature request ticket using the boost trac:

http://svn.boost.org/trac/boost/newticket

Daniel