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@ohanhi
ohanhi / frp.md
Last active May 6, 2024 05:17
Learning FP the hard way: Experiences on the Elm language

Learning FP the hard way: Experiences on the Elm language

by Ossi Hanhinen, @ohanhi

with the support of Futurice 💚.

Licensed under CC BY 4.0.

Editorial note

@TheSeamau5
TheSeamau5 / ParallelTask.elm
Created April 22, 2015 20:21
Run tasks in Parallel in Elm
parallel : Address a -> List (Task error a) -> Task error (List ThreadID)
parallel address tasks =
let
sendToAddress task = spawn (task `andThen` send address)
in
sequence (List.map sendToAddress tasks)
@TheSeamau5
TheSeamau5 / QuasiFullECS.elm
Last active August 3, 2017 23:09
Quasi-Full expression of Entity Component System in Elm
import Color (Color, rgb)
import Graphics.Collage (..)
import Graphics.Element (Element)
import List ((::), map)
import Signal (Signal, foldp, (<~), sampleOn)
import Keyboard (arrows)
import Time (millisecond, every)
--------------------------
@pchiusano
pchiusano / signals.elm
Created September 19, 2014 14:34
Various Elm signal functions
module Elmz.Signal where
import Elmz.Maybe
{-| Delay the input `Signal` by one unit. -}
delay : a -> Signal a -> Signal a
delay h s =
let go a {prev,cur} = { cur = prev, prev = a }
in foldp go { prev = h, cur = h } s
|> lift .cur
@claus
claus / gist:1396250
Created November 26, 2011 20:22
Resolution independent rendering of Bezier curves in WebGL
<!doctype html>
<html>
<head>
<title>Resolution independent rendering of Bezier curves in WebGL</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<script src="glMatrix-0.9.6.min.js"></script>
<script id="shader-vs" type="x-shader/x-vertex">
attribute vec3 aVertexPosition;
attribute vec2 aBezierCoord;
@jonraasch
jonraasch / jQuery.support-transition.js
Created April 21, 2010 14:32
Extends the jQuery.support object to CSS3 transition
// jQuery.support.transition
// to verify that CSS3 transition is supported (or any of its browser-specific implementations)
$.support.transition = (function(){
var thisBody = document.body || document.documentElement,
thisStyle = thisBody.style,
support = thisStyle.transition !== undefined || thisStyle.WebkitTransition !== undefined || thisStyle.MozTransition !== undefined || thisStyle.MsTransition !== undefined || thisStyle.OTransition !== undefined;
return support;
})();
@njvitto
njvitto / deploy.rake
Created April 11, 2010 16:56 — forked from RSpace/deploy.rake
Rakefile to deploy and rollback to Heroku in two different environments (staging and production) for the same app
#Deploy and rollback on Heroku in staging and production
task :deploy_staging => ['deploy:set_staging_app', 'deploy:push', 'deploy:restart', 'deploy:tag']
task :deploy_production => ['deploy:set_production_app', 'deploy:push', 'deploy:restart', 'deploy:tag']
namespace :deploy do
PRODUCTION_APP = 'YOUR_PRODUCTION_APP_NAME_ON_HEROKU'
STAGING_APP = 'YOUR_STAGING_APP_NAME_ON_HEROKU'
task :staging_migrations => [:set_staging_app, :push, :off, :migrate, :restart, :on, :tag]
task :staging_rollback => [:set_staging_app, :off, :push_previous, :restart, :on]