Re: [boost] [functional] How to avoid a dependency on functional?

Daniel James wrote:

My preference is to use something like: 'boost::hash<T> hasher; return hasher(x.native())'.

That's what I do in shared_ptr, but in path's case, I don't believe that it can be done. hash_value( path ) does not depend on a template parameter, so the definition of hash<string> must be visible (on compilers that implement two-phase lookup properly).