I don't think I'll need the GUI bindings, since I'm mostly using my own GUI
system (just a big openGL canvas%). I imagine that I could just have my
system generate events and create behaviors on its own and just use the
update model. Is there anything stopping me from being able to just
`(require
Dnia 2013-11-12, wto o godzinie 10:56 -0600, Lawrence Bottorff pisze:
> I'm your typical newbie who is hand-wringing over what direction to go
> in the general functional programming world. Lisp, Scheme, or Haskell?
>
>
> Of late I've been trying to get through the Barski book, "Land of
> Lisp,"
On Tue, 12 Nov 2013, Hendrik Boom wrote:
> On Tue, Nov 12, 2013 at 10:56:09AM -0600, Lawrence Bottorff wrote:
> > I'm your typical newbie who is hand-wringing over what direction to go in
> > the general functional programming world. Lisp, Scheme, or Haskell?
> >
[...]
> >
> > I understand that
Similarly to what Shriram said, I think a big problem with FrTime is that
it's monolithic. It could (in my opinion) be greatly improved if the core
update model were decoupled from any language extensions, global state, or
threads, i.e., made into something that could be independently
instantiated,
On Tue, Nov 12, 2013 at 11:55:22PM -0500, David T. Pierson wrote:
> On Nov 12, 2013, at 4:04 PM, Vlad Kozin wrote:
> > Can somebody pls have a look at this code. I can't figure out why it
> > doesn't work. Input is certainly seen inside the background thread
> > that I spawn to pump data from one p
I think the core stuff will continue to work fine; I imagine the GUI
bindings have ossified by now.
You may actually find it useful to look at some of the examples on the
Flapjax site (www.flapjax-lang.org). There, we were actively trying to
convey an idea to a community that thought didn't think
I've been interested in FRP for a while, but I haven't yet found a way to
learn it, and I'm thinking FrTime might be a good way. I'm the kind of guy
who learns stuff best by integrating them into my projects, and I'm working
on a project in Racket right now that seems like it could benefit. How
h
On Nov 12, 2013, at 4:04 PM, Vlad Kozin wrote:
> Can somebody pls have a look at this code. I can't figure out why it
> doesn't work. Input is certainly seen inside the background thread
> that I spawn to pump data from one port to another. But the main
> thread seems to receive an empty port.
Hi
On Tue, Nov 12, 2013 at 10:17 PM, Matthew Flatt wrote:
>
> For fun, I tried adding `unsafe-flrandom` to use in place of
> `random-real`, in which case the JIT can leave the flonum result
> unboxed. That saves another 40% or so, but only if I manually inline
> `unsafe-flrandom` in place of `random-
As you say, at least for Racket, this seems to be largely a benchmark
of the random-number generator. In particular, it turns out to be
mostly measure the overhead of getting from JIT-generated code to the
random-number generator and back.
Sam pointed out a part of the cost that you can avoid (by
For the record, this seems to have been fixed in a recent commit.
On Sun, Nov 10, 2013 at 6:52 PM, Stephen Chang wrote:
> Trying to compile head and I get the error below. I originally thought
> it was due to one of my external pkgs but I've removed them one-by-one
> until I have nothing installe
Hi Dan,
I don't think anyone is using FrTime, because nobody in the Racket
community really expressed much interest in it, so it didn't gain
enough momentum. I concluded that the kind of person who likes Racket
is perfectly happy with Racket's existing GUI libraries, and FrTime
was solving a non-p
Hi Shriram
I guess I could have formulated clearer questions!
Here's one: Is anyone using FrTime as their preferred means of programming
Racket GUIs? Why / why not?
I'll go away and read your paper on FrTime, have a play, and come back when
I have a bit more understanding.
Dan
On Wed, Nov 1
I should also mention that doing this by creating a temporary file feels
incredibly hacky if only because it never gets deleted. If anyone can think of
a better pattern pls share.
thanks
---
Vlad Kozin
On Nov 12, 2013, at 4:04 PM, Vlad Kozin wrote:
> Hi all.
>
> Can somebody pls have a l
Hi all.
Can somebody pls have a look at this code. I can't figure out why it doesn't
work. Input is certainly seen inside the background thread that I spawn to pump
data from one port to another. But the main thread seems to receive an empty
port.
Thanks
---
Vlad Kozin
___
Elm was (partially) inspired by Flapjax, which is a direct descendant
of FrTime. So the Elm-like language for Racket _is_ FrTime.
Perhaps you have a different question? Maybe I've completely
misunderstood your question!
Racket Users list:
http://lists.racket-lang.org/users
Given the existence of FrTime, whalesong, and FlapJax is anyone working on
or considering doing an elm-like language (http://elm-lang.org/) for Racket?
Behind that question is my need to do some GUI programming -- more like
rapid prototyping at this stage -- in Racket and/or using a web front-end,
Lawrence, let me supplement Alex's answer. if you have programmed before, dive
right into Realm. If it is your first real adventure in programming, take the
time to work through HtDP. -- Matthias
On Nov 12, 2013, at 12:47 PM, Alexander McLin wrote:
> Racket is truely a great and cleaner Lis
On Tue, Nov 12, 2013 at 10:56:09AM -0600, Lawrence Bottorff wrote:
> I'm your typical newbie who is hand-wringing over what direction to go in
> the general functional programming world. Lisp, Scheme, or Haskell?
>
> Of late I've been trying to get through the Barski book, "Land of Lisp,"
> but I'
On Nov 12, 2013, at 9:32 AM, Ryan Culpepper wrote:
> On 11/12/2013 01:51 AM, John Clements wrote:
>> I was looking over changes to Rust recently, and I saw with some alarm that
>> at least one macro had added an ad-hoc local expansion mechanism. I sat
>> down with MTWT to see if I could figure
Racket is truely a great and cleaner Lisp. It's carved out its own path
that I find quite attractive and am enjoying my forays into Racket.
I would recommend you just get started with The Little Schemer to get a
taste, move on to How To Design Programs. There is a Coursera course that
uses HTDP, a
On 11/12/2013 01:51 AM, John Clements wrote:
I was looking over changes to Rust recently, and I saw with some alarm that at
least one macro had added an ad-hoc local expansion mechanism. I sat down with
MTWT to see if I could figure out a situation where this might cause a problem.
I came up
I'm your typical newbie who is hand-wringing over what direction to go in
the general functional programming world. Lisp, Scheme, or Haskell?
Of late I've been trying to get through the Barski book, "Land of Lisp,"
but I'm really seeing now why Scheme was created: CL seems to have a ton of
gnarl t
I've realized one big slowdown in your code -- `random` by default
uses a parameter to find the `current-pseudo-random-generator`. By
removing the parameter lookup from the loop, I cut the time by about
33%.
My new version is at the same Gist url, with some very minor
additional speedups.
Sam
O
I now know why your custom RNG was slow. Racket fixnums are (a)
signed and (b) have a width 1 less than the width of the host
architecture: [1]
-> (fixnum? (- (expt 2 64) 1))
#f
-> (fixnum? (- (expt 2 63) 1))
#f
-> (fixnum? (- (expt 2 62) 1))
#t
Therefore, your random number generation calculati
Here's a start: https://gist.github.com/samth/7431213
This is a Typed Racket version of your program, converted to use
flvectors instead of f64vectors. I haven't taken a look at the code
for your random number generator yet, but you could try doing the
timing by creating a large array of random nu
Hi Will,
I think flvectors are supposed to be more efficient than f64vectors (one
less level of indirection).
In addition, you can use unsafe-flvector-ref .
Stephan
2013/11/12 William Cushing
> I'm in the process of benchmarking various systems for their ability to
> handle the inner loop of
I'm trying to implement a custom writer for a struct with generics, but I
think I'm misunderstanding something.
What I want to do is specialize only the behavior for `write' and
`display', but leave the behavior for `print' untouched. So I thought that
is what define/generic was for, but the follo
I'm in the process of benchmarking various systems for their ability to
handle the inner loop of compilations of MCMC from a higher level
probabilistic modeling language (BLOG).
Attached are examples of the kind of output (instantiations of MCMC) we'd
like to be able to generate given the tried-an
On Sun, Nov 10, 2013 at 12:36:13PM -0500, Matthias Felleisen wrote:
>
> Have you considered classes instead of structs? -- Matthias
Matthias,
Thanks for the response.
Classes did cross my mind, but in the particular use case I'm working on
now, they feel a little too heavy. Perhaps that is a r
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