From: matt@... (matt neuburg)
Date: 2006-10-28T03:20:14+09:00
Subject: Re: can there be a "with" construction?

Jacob Fugal <lukfugl@gmail.com> wrote:

> On 10/27/06, matt neuburg <matt@tidbits.com> wrote:
> > Some languages have a "with" construction, where undefined methods are
> > routed to a designated object. Here's an example from UserTalk:
> >
> > with system.startup {
> >    string(license)
> > }
> >
> > UserTalk knows what "string" is, but when it can't find "license" it
> > reinterprets it as system.startup.license, which works.
> 
> Barebones approach:
> 
>   system.startup.instance_eval do
>     ...
>   end
> 
> instance_eval sets "self" for the block so all messages with an
> implicit receiver go to it's receiver.

Perfect-o-rama! So I can use "with" syntax by defining this:

def with(ref, &block)
  ref.instance_eval &block
end

Thanks, that's great. m.

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