Standard exception hierarchy

[Leandro Lucarella]

> Tango has an extended set of pre-defined exceptions for this reason, and 
> they live in tango.core.Exception. You might find something there to 
> meet your needs?
> 
> e.g. IllegalElementException, NoSuchElementException, and 
> IllegalArgumentException

But as long as Tango don't replace Phobos and become the official D 
standard library, this solves nothing about an standard exception hierarchy.

-- 
Leandro Lucarella
Integratech S.A.
4571-5252