From: Victor Shepelev <vshepelev@...>
Date: 2006-03-25T16:25:09+09:00
Subject: Re: [QUIZ] Object Query Language for Ruby?

> Victor Shepelev wrote:
> > Today I've stubled upon an interesting article at CodeProject:
> >
> > Karmencita: an object query language for .NET
> > ...
> > // initialize the data source
> > // (in this case a Stack of Customers)
> > Stack<Customer> customers = .....
> 
> customers = ...
> 
> > // initialize Karmencita with
> > // the type of object to be queries
> > ObjectQuery<Customer> oq =
> >          new ObjectQuery<Customer>();
> >
> > // write the query
> > string query = "Name = [Thor the Mighty]" +
> >               " and IsMale = true and BirthDate" +
> >               " < [1,1,1910]";
> 
> oq = proc {|cust| cust.name == "Thor the Mighty" &&
>                   cust.male? && cust.birth_date < Date.new(1910) }
> 
> > //run the query
> > Customer[] processes = (Customer[]) oq.Select(customers, query);
> 
> processes = customers.select(&oq)
> 
> > I have no idea about when and how can be it useful, but it can be
> > intersting
> > to do the trick for Ruby, ha?
> 
> It's already there!
> 

Hmmm... Really :) I'm not an idiot, usually. 

I must say, Ruby solution seems to be much prettier and "in a spirit of a
languages", yes?

Victor.