_concat_hash_sorted()

[David E. Wheeler]

Howdy Tim et al.,

I've just released [DBIx::Connector](http://search.cpan.org/perldoc?DBIx::Connector 
) to the CPAN. It does connection caching and transaction management,  
borrowing pages from `connect_cached()`, Apache::DBI, and DBIx::Class,  
but usable in any of these environments. The transaction management is  
similar to that in DBIx::Class, but also includes savepoint support  
(hence my earlier post). Blog entry [here](http://www.justatheory.com/computers/programming/perl/modules/dbix-connector.html 
).

Anyway, I'm caching the connections under a key I'm constructing just  
like `connect_cached()` does:

        my $key  = do {
            no warnings 'uninitialized';
            # XXX Change in unlikely event the DBI changes this  
function.
            join "!\001", @_[0..2], DBI::_concat_hash_sorted(
                $_[3], "=\001", ",\001", 0, 0
            )
        };

I thought this the simplest thing to do, but I'm wondering, Tim, if it  
might be possible to expose this interface? It seems like it'd be  
generally useful. Thoughts?

Thanks,

David