[Haskell-beginners] Passing data between programs.

[MAN]

Pipes seem a bit better than sockets. I'm investigating the possibility
right now. As I read about sockets I remembered there's Haskell bindings
to DBus... has anybody used it? ever? (last update was over 4 years
ago).

El mar, 12-04-2011 a las 00:45 -0400, Mike Meyer escribió:
> On Tue, 12 Apr 2011 00:45:57 -0300
> MAN <elviotoccalino at gmail.com> wrote:
> 
> > I've had this problem for a while now, and it's about time I recognize I
> > need help :P
> > I've written a few programs in Haskell that excel at numeric and/or
> > complex computations; I love the efficiency of the language. I do not
> > love, however, writing GUIs for this pieces of software.
> > Perhaps it's the echoes of bad times past when trying to install gtk2hs,
> > or that I know I can crank up some decent UIs in other languages faster.
> > Whatever the reason, I've been thinking of writing the GUI for my
> > programs as an extension of the program itself, possibly in another
> > language.
> > Assuming the GUI is written in, say, Python, and want to pass data to
> > the underlying Haskell program, how to send it? I'd like to avoid
> > touching the disk, but I don't have enough experience to answer my own
> > questions:
> > - command line arguments? what if data is large?
> 
> Pipes? At least on Unix. One of the two halves of the program starts
> the other, with standard input & output for the child going to/from
> the parent.
> 
> > - client GUI, server Haskell program, and unix sockets? is there a
> > simpler way?
> 
> These days, pipes seem to be built on top of/using the same
> architecture as sockets, so the difference between this and my pipes
> suggestion is that the pipes doesn't have to deal with rendezvous
> issues.
> 
> Come to think of it, Joel Bartlett at DECWRL had a system called ezd
> that looked a lot like this, except he did it the other way around:
> his server (written in Scheme) provided high-level (for the time)
> graphics primitives whose interface was a pair of pipes. I played with
> it some back in the day, and I recall it as pretty spiffy (especially
> using Bartlett's Scheme compiler for the front end).
> 
> And the internet hasn't forgotten it! I found a copy of his WRL Tech
> Report on it:
> http://www.hpl.hp.com/techreports/Compaq-DEC/WRL-91-6.html
> 
>        <mike