Operator overloading or alternatives to expression templates

[Bahman Movaqar via Digitalmars-d]

On Fri, 11 Sep 2015 21:40:58 +0200, Martin Nowak 
<code+news.digitalmars at dawg.eu> wrote:
> Does anyone have a different idea how to make a nice query language?
> db.get!Person.where!(p => p.age > 21 && p.name == "Peter")

Django's approach is, IMO,  the cleverest and least magical one while 
keeping it expressive and efficient:

     Person.objects.filter(age__gt=21, name__eq='peter')

The input of `filter` is keyword argument style. So, filter can 
access the dynamic argument names, in addition to their values. This 
makes it easy to understand user's intent without the need to 
overloaded operators or black magic (like repeated reflections 
Hibernate uses) and the syntax stays clean from user's perspective as 
well.

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Bahman Movaqar