A Pen by CarterTsai on CodePen.
A Pen by CarterTsai on CodePen.
A Pen by CarterTsai on CodePen.
A Pen by CarterTsai on CodePen.
A Pen by CarterTsai on CodePen.
(by @andrestaltz)
So you're curious in learning this new thing called (Functional) Reactive Programming (FRP).
Learning it is hard, even harder by the lack of good material. When I started, I tried looking for tutorials. I found only a handful of practical guides, but they just scratched the surface and never tackled the challenge of building the whole architecture around it. Library documentations often don't help when you're trying to understand some function. I mean, honestly, look at this:
Rx.Observable.prototype.flatMapLatest(selector, [thisArg])
Projects each element of an observable sequence into a new sequence of observable sequences by incorporating the element's index and then transforms an observable sequence of observable sequences into an observable sequence producing values only from the most recent observable sequence.
| var CACHE = {}; | |
| var cache = function() { | |
| var self = this; | |
| self.memory = {}; | |
| }; | |
| cache.put = function(key, data , cb) { | |
| var self = this; | |
| self.memory = {key:data}; |
| var async = require('async'); | |
| function delayRun(data) { | |
| setTimeout(function(){ | |
| console.log("run" + data); | |
| }, data); | |
| } | |
| async.series([delayRun(3000),delayRun(1000),delayRun(2000)]) |
| var mapTable = {} | |
| // insert key | |
| mapTable["key1"] = '1' | |
| // check key1 exits | |
| if(mapTable.hasOwnProperty("key1")){ | |
| console.log('The key1 exits'); | |
| } |
A Pen by CarterTsai on CodePen.