On Apr 19, 1:38 pm, Michael Lang <[email protected]> wrote:
> One bit of feedback I do have with regards to Virtual Rows documentation,
> that is also somewhat symptomatic of some of the other pages.  The new
> format breaks things up a bit and thus is a little less dense, but its still
> dense.  I think the main reason is simply that Virtual Rows isn't really
> defined up front.  Three questions come to mind just about anytime I show
> somebody virtual rows or try to tell 'em what it is (and I still don't do a
> good job at it):
>
> "what are virtual rows?"
>
> "why do virtual rows exist?"

I've added some documentation on the purpose for virtual rows:

http://github.com/jeremyevans/sequel/commit/6e1fafca0195da58d983413e83cfb31b1550ba2a
http://code.jeremyevans.net/sequel-www/rdoc/files/doc/virtual_rows_rdoc.html

I'm not sure if I have a good answer for what a virtual row is that
will actually help people.  Really, it's a factory class whose
instances use method_missing to return instances of
Sequel::SQL::Expression subclasses.  Since that explanation will
generally confound more than enlighten, I decided to leave it out.  In
general, the user doesn't need to care what it is as long as they can
use it correctly.

Jeremy

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