Is there a standard way to define to for user-defined types?

[kenji hara]

2011/6/21 Andrei Alexandrescu <SeeWebsiteForEmail at erdani.org>:
> Kenji, you may want to package your 1 and 2 into a pull request, and 3 in a
> separate pull request so we all can take a look.

Just now I sent pull request #118 and #119.

BTW, the functions are included in std.conv have odd order.
This is what was intended?

Kenji