From: Trans <transfire@...>
Date: 2006-11-17T21:50:09+09:00
Subject: Re: #returning and #tap


Joel VanderWerf wrote:
> dblack@wobblini.net wrote:
> > Hi --
> >
> > On Fri, 17 Nov 2006, Joel VanderWerf wrote:
> >
> >> Coming full circle around the golf course... This last one above is
> >> what lead me to prefer #then (== #tap) in the first place:
> >>
> >> def foo
> >>  @foo ||= Foo.new.then do |f|
> >>    f.bar = "bar"
> >>  end
> >> end
> >>
> >> Also, #then  avoids the scoping nastiness of #instance_eval.
> >
> > I'm not getting the semantics of "then".  Do you mean "then" as in, "I
> > took off my coat and then sat down", as opposed to then in if/then?
>
> Yes. Not much better than #tap, is it? Any ideas...? "and_then"?

well, #with is the other common synonym. but #returning seems as well.
you just read it with the object of returning being stated first, which
we sometimes do in english.

 def foo
  @foo ||= Foo.new.returning do |f|
    f.bar = "bar"
  end
 end 

T.