[FRIAM] Literate CoffeeScript
(This may be a bit odd for some of us, but I wanted to pass on a novel innovation) The latest release of coffeescript has a new Literate mode: if you use the extension .litcoffee it is also treated as markdown! This is a modern extension to Knuth's Literate Programming: http://www-cs-faculty.stanford.edu/~uno/lp.html This is likely brought about by the coffeescript docco documentation tool, but now integrated into the coffeescript compiler. I've been imbedding markdown in agentscript for docco use once the project got real. You can see it here: http://htmlpreview.github.com/?https://raw.github.com/backspaces/agentscript/master/docs/model.html I wasn't sure initially, but now am entirely sold on the approach. For one thing it has been invaluable for discussing the project with other programmers wishing to modify the code. The literate coffeescript announcement is here, with links showing the source in various formats: http://coffeescript.org/#literate As odd as it may seem, I recommend use of similar stunts in all languages that support it. Knuth has quite a following in this area. The idea of markdown comments certainly has a lot of traction. ( Now back to our scheduled .. er.. programming! :) -- Owen Literate CoffeeScript Besides being used as an ordinary programming language, CoffeeScript may also be written in literate mode. If you name your file with a .litcoffee extension, you can write it as a Markdown document — a document that also happens to be executable CoffeeScript code. The compiler will treat any indented blocks (Markdown's way of indicating source code) as code, and ignore the rest as comments. Just for kicks, a little bit of the compiler is currently implemented in this fashion: See it as a documenthttps://gist.github.com/jashkenas/3fc3c1a8b1009c00d9df , rawhttps://raw.github.com/jashkenas/coffee-script/master/src/scope.litcoffee, and properly highlighted in a text editor http://cl.ly/LxEu. I'm fairly excited about this direction for the language, and am looking forward to writing (and more importantly, reading) more programs in this style. As *1.5.0* is the first version of CoffeeScript that supports it, let us know if you have any ideas for improving the feature. FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College to unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com
Re: [FRIAM] Literate CoffeeScript
So sad, and so unnecessary.. https://github.com/faylang/fay/wiki http://www.haskell.org/haskellwiki/Literate_programming mail2web - Check your email from the web at http://link.mail2web.com/mail2web FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College to unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com
Re: [FRIAM] Literate CoffeeScript
Haskell is a wonderful language. But it is (obviously) functional, which means no side effects. The primary purpose of a language like JavaScript is to produce side-effects that change the DOM and what is displayed by a browser. How does Fay get around that seeming incompatibility in objectives? *-- Russ Abbott* *_* *** Professor, Computer Science* * California State University, Los Angeles* * My paper on how the Fed can fix the economy: ssrn.com/abstract=1977688* * Google voice: 747-*999-5105 Google+: plus.google.com/114865618166480775623/ * vita: *sites.google.com/site/russabbott/ CS Wiki http://cs.calstatela.edu/wiki/ and the courses I teach *_* On Mon, Feb 25, 2013 at 12:11 PM, mar...@snoutfarm.com mar...@snoutfarm.com wrote: So sad, and so unnecessary.. https://github.com/faylang/fay/wiki http://www.haskell.org/haskellwiki/Literate_programming mail2web - Check your email from the web at http://link.mail2web.com/mail2web FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College to unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College to unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com
Re: [FRIAM] Literate CoffeeScript
Russ wrote: But it is (obviously) functional, which means no side effects. The primary purpose of a language like JavaScript is to produce side-effects that change the DOM and what is displayed by a browser. How does Fay get around that seeming incompatibility in objectives? Haskell deals with side-effects using Monads. Las Vegas is like a Monad: What happens in Vegas, stays in Vegas. The idea is your DOM would be an opaque type that could be returned by a function, but its state is not revealed. In this way, there are no side effects outside of the global object that is returned. http://hackage.haskell.org/package/fay-dom http://www.haskell.org/haskellwiki/Monad myhosting.com - Premium Microsoft® Windows® and Linux web and application hosting - http://link.myhosting.com/myhosting FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College to unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com
Re: [FRIAM] Literate CoffeeScript
That's fine, but it seems strange to promote a language because one of its features lets you work around its primary objective. *-- Russ Abbott* *_* *** Professor, Computer Science* * California State University, Los Angeles* * My paper on how the Fed can fix the economy: ssrn.com/abstract=1977688* * Google voice: 747-*999-5105 Google+: plus.google.com/114865618166480775623/ * vita: *sites.google.com/site/russabbott/ CS Wiki http://cs.calstatela.edu/wiki/ and the courses I teach *_* On Mon, Feb 25, 2013 at 2:44 PM, mar...@snoutfarm.com mar...@snoutfarm.comwrote: Russ wrote: But it is (obviously) functional, which means no side effects. The primary purpose of a language like JavaScript is to produce side-effects that change the DOM and what is displayed by a browser. How does Fay get around that seeming incompatibility in objectives? Haskell deals with side-effects using Monads. Las Vegas is like a Monad: What happens in Vegas, stays in Vegas. The idea is your DOM would be an opaque type that could be returned by a function, but its state is not revealed. In this way, there are no side effects outside of the global object that is returned. http://hackage.haskell.org/package/fay-dom http://www.haskell.org/haskellwiki/Monad myhosting.com - Premium Microsoft® Windows® and Linux web and application hosting - http://link.myhosting.com/myhosting FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College to unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College to unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com
Re: [FRIAM] Literate CoffeeScript
That's fine, but it seems strange to promote a language because one of its features lets you work around its primary objective. Nope. Monads are a purely functional construct. A elegant generalization, Arrows, enable one to construct Unix-style pipelines, but with typed contracts. That is, imagine having a command shell that rejected as bad syntax pipelines where the data of the consumer and producer did not make sense together. Marcus myhosting.com - Premium Microsoft® Windows® and Linux web and application hosting - http://link.myhosting.com/myhosting FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College to unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com
Re: [FRIAM] Literate CoffeeScript
mar...@snoutfarm.com wrote at 02/25/2013 02:57 PM:
Nope. Monads are a purely functional construct. A elegant generalization,
Arrows, enable one to construct Unix-style pipelines, but with typed
contracts. That is, imagine having a command shell that rejected as bad
syntax pipelines where the data of the consumer and producer did not make
sense together.
You mean I wouldn't be allowed to listen to the smooth sounds of:
echo main(t){for(t=0;;t++)putchar(t*((t9|t13)25t6));} | gcc
-xc - ./a.out | aplay
--
== glen e. p. ropella
You gotta help me, help me to shake off
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Re: [FRIAM] Literate CoffeeScript
On 2/25/13 5:31 PM, glen wrote:
mar...@snoutfarm.com wrote at 02/25/2013 02:57 PM:
Nope. Monads are a purely functional construct. A elegant generalization,
Arrows, enable one to construct Unix-style pipelines, but with typed
contracts. That is, imagine having a command shell that rejected as bad
syntax pipelines where the data of the consumer and producer did not make
sense together.
You mean I wouldn't be allowed to listen to the smooth sounds of:
echo main(t){for(t=0;;t++)putchar(t*((t9|t13)25t6));} | gcc
-xc - ./a.out | aplay
Here's an example taken from YampaSynth, a domain-specific language for
sound synthesis built using the concepts of Functional Reactive
Programming. The pipeline is all in Haskell, all the way to the OpenAL
output. (No cheating with an external command line program.)
http://www.haskell.org/haskellwiki/Arrow
http://www.cs.rit.edu/~eca7215/frp-independent-study/Survey.pdf
http://www.haskell.org/haskellwiki/Yampa
http://hackage.haskell.org/package/YampaSynth
Here's a couple sounds. `scifi' is a whirly-gig sort of sound, and
`scale' is just a set of sequential notes.
{-# LANGUAGE Arrows #-}
module Main where
import qualified SynthBasics as Synth
import qualified Data.Audio as Audio
import Player.OpenAL (play)
import FRP.Yampa
sciFi :: SF () Audio.Sample
sciFi = proc () - do
und - arr (*0.2) Synth.oscSine 3.0 - 0
swp - arr (+1.0) integral - -0.25
audio - Synth.oscSine 440 - und + swp
returnA - audio
envBell :: SF (Event ()) (Synth.CV, Event ())
envBell = Synth.envGen 0 [(0.05,1),(1.5,0)] Nothing
bell :: Synth.Frequency - SF () (Audio.Sample, Event ())
bell f = proc () - do
m- Synth.oscSine (2.33 * f) - 0
audio- Synth.oscSine f - 2.0 * m
(ampl, end) - envBell - noEvent
returnA - (audio * ampl, end)
scale :: SF () (Audio.Sample, Event ())
scale = ( afterEach [ (0.0, 60), (1.0, 62), (1.0, 64),
(1.0, 65), (1.0, 67), (1.0, 69),
(1.0, 71), (1.0, 72)]
constant ()
arr (fmap (\k - (bell $ toFreq k) arr fst))
rSwitch (constant 0))
after 8 ()
toFreq :: Int - Double
toFreq n = 440.0 * (2.0 ** (((fromIntegral n) - 69.0) / 12.0))
main :: IO ()
main = do
let playIt = play 44100 5 1
-- playIt (sciFi after 5 ())
playIt scale
return()
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Re: [FRIAM] Literate CoffeeScript
On 2/25/13 5:31 PM, glen wrote:
You mean I wouldn't be allowed to listen to the smooth sounds of: echo
main(t){for(t=0;;t++)putchar(t*((t9|t13)25t6));} | gcc -xc -
./a.out | aplay
I should not let this slip-by without acknowledging that this is a
functional program. +1 for that!
Marcus
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