Am 11.09.2015 um 21:40 schrieb Martin Nowak:
I find the reasons for turining down my ER a bit moot.
[Issue 14593 – operator overloading can't be used with expression
templates](https://issues.dlang.org/show_bug.cgi?id=14593)
(...)
The missing support for overloading the individual relational operators
is something that has often turned out very limiting to me in the past,
too. The opCmp approach is good as a default, but explicitly disallowing
implementation of the individual operators seems arbitrary.
Now expression templates make an awful DSL when being used to create a
HTML formatter, but when the original semantic of the operators is
preserved they are really powerful b/c the compiler already handles
typechecking, operator precedence, and captures variables.
Does anyone have a different idea how to make a nice query language?
db.get!Person.where!(p => p.age > 21 && p.name == "Peter")
I had played around with some ideas for a similar project, but didn't
find a really satisfying solution:
https://github.com/rejectedsoftware/dotter/blob/11ec72325e76c3329a58545526940c1df5328a2d/source/dotter/orm.d#L320
