Abstract Database Interface

[Philippe Sigaud]

On Tue, Oct 30, 2012 at 9:15 AM, Jacob Carlborg <doob at me.com> wrote:
> On 2012-10-30 04:22, BLM768 wrote:
>
>> If you make x some fancy wrapper type containing more fancy wrapper
>> types with overloaded equality operators that return some sort of
>> Expression class instead of a boolean, you might actually be able to get
>> this to work with only D's current features. However, that would kind of
>> destroy the hope of efficiency. :)
>
>
> It can probably all be handled at compile time. The problem with this that
> you cannot overload the following operators: &&, ||, != and probably some
> other useful operators.

&& and || can be replaced by & and |, so there is a workaround.
I feel much more limited by != and, even more problematic, !.  Maybe
unary - could be used in lieu of !.