busypeoples

Transforming Elements in React

Introduction

Transforming elements can be interesting if you're a library author, but can also be very valuable when writing components to abstract behaviour in your existing code base.

To get a better understanding, we will walkthrough the most important React Top Level API transformation functionalities. React offers a couple of helper functions that we can leverage when for creating and adapting elements, further information is available via the official React documentation.

ryanflorence

import React, { Component } from 'react'
import logo from './logo.svg'
import './App.css'

import { Route, Link, Redirect } from './Zero'

const paths = [ 'one', 'two', 'three' ]

class App extends Component {
  render() {

srdjan

100+ different js counter apps...

mgold

Using Mailboxes in Elm

Max Goldstein | July 30, 2015 | Elm 0.15.1

In Elm, signals always have a data source associated with them. Window.dimensions is exactly what you think it is, and you can't send your own events on it. You can derive your own signals from these primitives using map, filter, and merge, but the timing of events is beyond your control.

This becomes a problem when you try to add UI elements. We want to be able to add checkboxes and dropdown menus, and to receive the current state of these elements as a signal. So how do we do that?

The Bad Old Days

nolanlawson

// Promise.all is good for executing many promises at once
Promise.all([
  promise1,
  promise2
]);

// Promise.resolve is good for wrapping synchronous code
Promise.resolve().then(function () {
  if (somethingIsNotRight()) {
    throw new Error("I will be rejected asynchronously!");

justmoon

'use strict';

module.exports = function CustomError(message, extra) {
  Error.captureStackTrace(this, this.constructor);
  this.name = this.constructor.name;
  this.message = message;
  this.extra = extra;
};

require('util').inherits(module.exports, Error);

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.

---

auser

  angular.module('myApp.services', [])
  .factory('UserFactory', function($http, $q) {
    var service = {
      // our factory definition
      user: {},
      setName: function(newName) { 
        service.user['name'] = newName; 
      },
      setEmail: function(newEmail) {
        service.user['email'] = newEmail;

naholyr

Sample service script for debianoids

Look at LSB init scripts for more information.

Usage

Copy to /etc/init.d:

# replace "$YOUR_SERVICE_NAME" with your service's name (whenever it's not enough obvious)

jlong

var parser = document.createElement('a');
parser.href = "http://example.com:3000/pathname/?search=test#hash";

parser.protocol; // => "http:"
parser.hostname; // => "example.com"
parser.port;     // => "3000"
parser.pathname; // => "/pathname/"
parser.search;   // => "?search=test"
parser.hash;     // => "#hash"
parser.host;     // => "example.com:3000"