On Feb 20, 2012, at 7:49 AM, Andrei Alexandrescu
<[email protected]> wrote:
>
> Also, I think we can do better than defining the boilerplate constructor (see
> e.g. https://github.com/D-Programming-Language/phobos/pull/439). It's just a
> function. Consider:
>
> // this goes in the stdlib
> void raise(ConcreteException)(string message, Throwable t = null, string f =
> __FILE__, size_t l = __LINE__)
> {
> auto r = new ConcreteException;
> r.message = message;
> r.file = f;
> r.line = l;
> r.next = t;
> throw r;
> }
>
> class AcmeException : Exception {}
>
> Now whenever you want to raise AcmeException, you say
> raise!AcmeException("message"). Also, raise may accept additional data that
> fills the Variant[string]. That makes exception definitions one-liners.
What is gained here over the current approach:
throw new AcmeException("message");
Just eliminate the need for the ctor definition in the exception class?
