From: Roger Pack <rogerpack2005@...>
Date: 2008-12-09T02:16:21+09:00
Subject: [ruby-core:20429] Re: Proposal: deferred blocks

> Several people have played around with solutions that use ParseTree or
> RubyParser to extract the contents of a lambda and perform certain
> operations.
> For instance,
> Article.select {|a| a.title =~ /Some title/ }
> would generate "select * from articles where title ~ 'Some title'"
> This requires access to the ParseTree at runtime, which requires converting
> a proc to a ParseTree at runtime. I've been toying with the idea of an
> explicit language feature, like lisp quoting, that would explicitly pass the
> ParseTree to the method called.

Yeah for me Proc#to_s and Method#to_s would also be quite useful, if
only as a tool allowing people to do cool things like that [stronger
introspection].
It would make it possible to extract parameters and default values
trivially, too, as well as docstrings, etc.

As a side note, proc#parameters returning more default values [like
strings] would be nice too [strings, etc.],

Thanks!

-=R