staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

gregmac

    <!-- 
       Sign .exe files using signtool.exe.
       
       (c) 2014 Greg MacLellan, Licensed under MIT http://opensource.org/licenses/MIT
       
       Features:
       * Hides password from being displayed in build output 
       * Retries against multiple timestamp servers if the server returns an invalid response (fairly common)
       
      Usage:

meijeru

Red [
	Title: 		"Tile game"
	Purpose:	{An implementation in Red of the 4x4 sliding tile puzzle} 
	Author:		"Rudolf W. MEIJER (meijeru)"
	File:		%tile-game.red
	Needs:		'View
	Usage:		{
				 Click on any tile that is adjacent to the empty space
				 and it will shift to that space.
				 Try to obtain a given configuration, e.g. 1 to 15 in order.

greggirwin

; We have other reflective functions (words-of, body-of, etc.), but
; this is a little higher level, sounded fun to do, and may prove
; useful as we write more Red tools. It also shows how to make your
; own typesets and use them when parsing.

arity-of: function [
	"Returns the fixed-part arity of a function spec"
	spec [any-function! block!]
	/with refs [refinement! block!] "Count one or more refinements, and add their arity"
][

greggirwin

Red [
	File: 	 %greggs-mezz.red
	Author:  "Gregg Irwin"
	Purpose: "An interim mezzanine dump, while Red is still moving fast."
	Tabs:	 4
	Comment: {
		Not everything here has been well-tested or, well, tested. Most
		of the functions are ports from R2, with many more to come. I'm
		combining everything in one file for ease of experimentation, so
		you don't have to worry about includes or dependencies with the

DideC

Red [
	Title:   "Simple GUI livecoding demo"
	Author:  "Nenad Rakocevic / Didier Cadieu"
	File: 	 %livecode.red
	Version: 1.2.1
	Needs:	 'View
	Usage:  {
		Type VID code in the bottom right area, you will see the resulting GUI components
		rendered live on the left side and fully functional (events/actors/reactors working live).
		The top right area let you define Red's values to be used in your VID code, even functions or anything.

greggirwin

; A number of languages have `take-while/drop-while` funcs. This is just to show how you
; can build them in Red.

; This model can be applied to any function that has a `/part` refinement, or extended in
; any number of ways. We don't yet have a standard `apply` or `refine` function in Red.
; Once we do, a more general HOF version could take the action as an arg, as well as the
; test to apply.

; Should this return the position, like FIND, rather than an integer?
; No match would then mean a NONE result. REMOVE/TAKE/COPY with /PART

dockimbel

Red [
    Purpose: "Arabic to Roman numbers converter"
    Date: "06-Oct-2016"
]

table: [1000 M 900 CM 500 D 400 CD 100 C 90 XC 50 L 40 XL 10 X 9 IX 5 V 4 IV 1 I]

to-Roman: function [n [integer!]] reduce [
    'case collect [
        foreach [a r] table [

greggirwin

Red [
	author: "Gregg Irwin"
]

comment {
	From Gitter, @this-gavagai asked about modeling in Red compared to modeling
	in traditional OOP languages. Here's the concrete example given:

	"
	Imagine you wanted to simulate economic dynamics in a third world village. You

PeterWAWood

Red []

#system [
	chr: 1
	handle: 0
	KEYDOWN: 0
	KEYUP: 2
	minus-one: -1
	pointer-to-minus-one: :minus-one
	rs-phrase: ""