[erlang-questions] Two beautiful programs - or web programming made easy
Sat Feb 12 13:23:58 CET 2011
On Sat, Feb 12, 2011 at 1:15 PM, Ulf Wiger
> Well, I read those links not as an indictment of websockets per se, but of
> the UPGRADE-based handshake. I think Joe is definitely on to something here,
> and this sort of setup fits Erlang beautifully.
> Essentially, Joe may have found a way to dust off his ex11 idea, in a
> context where it is much more likely to succeed. ;-)
> (But please, Joe, leave out the !! this time - one revolution at a time.)
!! would be evil in this context. As soon as you get outside erlang !! is
! is good because it creates no dependencies, the message either gets there
it does not. Code that can deal with this uncertainty will be good, other
It's actually pretty awe-inspiring to say
Pid ! button("click me") and see a button just appear in the browser
The great thing is that we can now abstract the interface
button("text") means return a thing that when evaluated makes a button
or llvm assembler
it doesn't matter - as long as the eval end knows how to eval it. So the top
code can be written entirely without knowledge of what's going on under the
> Ulf W
>  http://ftp.sunet.se/pub/lang/erlang/workshop/2004/ex11.pdf
> On 12 Feb 2011, at 12:46, Masklinn wrote:
> > On 2011-02-12, at 12:33 , Joe Armstrong wrote:
> >> You'll need something like Google chrome to run them.
> > Warning: the status of the (currently broken ) WebSockets is unsure:
> Firefox and Opera already dropped it, it is unknown whether Chrome and
> Safari will keep it enabled by default. Chrome-wise, they've kept it for now
> but they plan on disabling it as soon as they hear of an exploit in the
> > Also, it's going to be a complete and utter pain to debug: even the more
> modern JS debuggers of Firefox (via Firebug) and Webkit have insane amounts
> of trouble finding and debugging dynamically evaluated code.
> >  http://www.ietf.org/mail-archive/web/hybi/current/msg04744.html
> >  http://codereview.chromium.org/5643005/
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> Ulf Wiger, CTO, Erlang Solutions, Ltd.
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