On Tuesday, 30 October 2012 at 10:01:06 UTC, Philippe Sigaud
wrote:
On Tue, Oct 30, 2012 at 9:15 AM, Jacob Carlborg <[email protected]>
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 !.
There was a pull request for __traits(codeof, func) that would
return the code for a symbol including lambda methods. It would
probably be easier to have something like that for getting the
AST and then using that to generate SQL queires (this is how C# /
LINQ does it) than using sketchy hacks that go against natural
language feel. Though it wouldn't be particularly easy to get
that in to the compiler apparently due to AST rewriting issues.
https://github.com/D-Programming-Language/dmd/pull/953
