From h.wickham at gmail.com  Tue Oct  9 17:57:52 2012
From: h.wickham at gmail.com (Hadley Wickham)
Date: Tue, 9 Oct 2012 10:57:52 -0500
Subject: [Rd] Capturing environment associated with a promise
In-Reply-To: <alpine.LFD.2.02.1210080933540.1869@nokomis.stat.uiowa.edu>
References: <CABdHhvHGm8qABh7XWeMNCA9qLUFEf1ksJaf0NDH_xhyHK=jtpw@mail.gmail.com>
	<alpine.LFD.2.02.1210080933540.1869@nokomis.stat.uiowa.edu>
Message-ID: <CABdHhvEVcNzWcqhtMeQa2jOeWFcx+bkLTRenkDwsjrNZNmwY=w@mail.gmail.com>

> Promises are an implementation detail -- we need to be able to change
> them, optimize them away, etc, so there is a limit on what we want to
> expose.  Allowing a query of whether a binding is delayed or not
> should be OK but would want to think that through more carefully
> before committing to this.

Ok, thanks.

Hadley


-- 
RStudio / Rice University
http://had.co.nz/



[Rd] Capturing environment associated with a promise
Hadley Wickham