| var UserModel = pd.make(Model,{ | |
| get: function _get(id, cb) { | |
| // nano is a database client | |
| this.nano.get(id, | |
| // whitelist runs every error through the white list, | |
| // if it fails (false) throw it | |
| // if it succeeds (true) pass it to cb | |
| error.whitelist(function _errors(err) { | |
| if (err.syscall === 'getaddrinfo') { | |
| UserModel.get(id, cb); |
| var whitelistMap = { | |
| "get": ["not_found"], | |
| "insert": ["conflict"], | |
| "delete": [] | |
| } | |
| function makeWhitelistCallback(method, thing, cb) { | |
| return error.whitelist(function _errors(err) { | |
| if (err.syscall === "getaddrinfo") { | |
| UserModel[method](thing, cb); |
| var adoptNode = (function () { | |
| function setOwnerDocument(node, doc) { | |
| // implement this. Step 1 of DOM4 adopt a node algorithm | |
| node.triggerBaseUrlChange(); | |
| node._ownerDocument = doc; | |
| node._attributes._ownerDocument = doc; | |
| [].forEach.call(node.childNodes, function (node) { | |
| setOwnerDocument(node, doc); | |
| }); | |
| } |
| <tbody> | |
| {% for child in user.children if user.isFemale %} | |
| <tr> | |
| <td>{{ child }}</td> | |
| </tr> | |
| {% endfor %} | |
| </tbody> |
| var person = Object.make(null, { | |
| get name() { | |
| return this.first_name + " " + this.last_name; | |
| }, | |
| set name() { | |
| ... | |
| }, | |
| greet: function (person) { | |
| return this.name + ': Why, hello there, ' + person + '.' | |
| } |
Common concerns about node
It's not even version 1 yet
So what? Version numbers matter these days? All software I realise never get's upto version "1".
Node.js is stable and it's a shining example for asynchronous IO using javascript.
Socket.io is stable and the best cross platform websocket abstraction I've seen. You want to use websockets in production today? Use socket.io
| burrito(file, function (node) { | |
| if (node.name === "call" && | |
| node.start.value === "load" | |
| ) { | |
| // magic numbers everywhere! | |
| var module = node.value[1][0][1]; | |
| preLoad(module); | |
| } | |
| }); |
| var events = require('events'); | |
| var util = require('util'); | |
| var pd = require("pd"); | |
| pd.extendNatives(true); | |
| var Test = { | |
| Hello: pd.make(events.EventEmitter.prototype, { | |
| World: function () { console.log("hello world"); | |
| }) |
| var count = 3; | |
| function next() { | |
| count--; | |
| if (count === 0) { | |
| // continue | |
| } | |
| } | |
| doAjax("do", next); |
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>DOM-shim unit tests</title> | |
| <link rel="stylesheet" href="resources/nodeunit.css" type="text/css" /> | |
| <script src="resources/es5-shim.js"></script> | |
| <script src="resources/nodeunit.js"></script> | |
| <script src="../code/my/file"></script> | |
| </head> | |
| <body> |