jungchris

class ViewController: UIViewController {

    @IBOutlet weak var sceneView: ARSCNView!
        
    // declare world tracker
    let configuration = ARWorldTrackingConfiguration()
    
    override func viewDidLoad() {
            
        super.viewDidLoad()

jungchris

import { createSelector } from 'reselect'

const shopItemsSelector = state => state.shop.items
const taxPercentSelector = state => state.shop.taxPercent

const subtotalSelector = createSelector(
  shopItemsSelector,
  items => items.reduce((acc, item) => acc + item.value, 0)
)

jungchris

#pragma mark - ISO8601 to NSDate & vice-versa

// Convert ISO 8601 standard Zulu date+time to NSDate
+ (NSDate*)convertISO8601ToNSDate:(NSString*)isoString {
    
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss.SSSZ"];
    // Always use this locale when parsing fixed format date strings
    NSLocale *posix = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"];
    [formatter setLocale:posix];

jungchris

// This expands on the React Native docs
// https://facebook.github.io/react-native/docs/height-and-width.html
<View style={{flex: 1, flexDirection: 'column'}}>

  <View style={{flex: 1, flexDirection: 'row'}}>
    <View style={{flex: 5, backgroundColor: 'powderblue'}}>
      <Text style={{ fontSize: 18, fontFamily: fonts.base}}>Box 1</Text>
    </View>
    <View style={{flex: 2, backgroundColor: 'skyblue'}}>
      <Text>Box 2</Text>

jungchris

// Credit to: https://blog.expo.io/react-native-meets-async-functions-3e6f81111173#.7dvhnohnu
async function showAppleStockPriceAsync() {
  let url = 'http://dev.markitondemand.com/Api/v2/Quote/json?symbol=AAPL'
  let response = await fetch(url)
  let body = await response.json()
  let { AlertIOS } = require('react-native')
  AlertIOS.alert(body.Symbol, '$' + body.LastPrice)
}
showAppleStockPriceAsync()

jungchris

// I love this way of creating a superclass as a bind helper method,
// rather than binding in the constructor as follows:
/*
 constructor() {
  super();
  this. _handleClick = this. _handleClick.bind(this);
  this. _handleFoo = this. _handleFoo.bind(this);
 }
 */
// we bind in the BaseComponent instead using forEach with a fat arrow function

jungchris

import React from 'react';
import Child from './Child';
import Child2 from './Child2';

// const App = () => <h1>ReactDOM</h1>

// class App extends React.Component {
//   render() {
//     return <h1>Reactly</h1>
//   }

jungchris

body {
  background: #d5d5d5; 
  font-family: arial;
  color: #FAFAFA;
  text-transform: uppercase;
}

.scoreboard {
  background: #333;
  width: 700px;

jungchris

- (UIPresentationController *)presentationControllerForPresentedViewController:(UIViewController *)presented presentingViewController:(UIViewController *)presenting sourceViewController:(UIViewController *)source
{
    // Here, we'll provide the presentation controller to be used for the presentation
    Class presentationControllerClass;
    
    // If our presentation should be awesome, return the AAPLCoolPresentationController. We determine this based on -[AAPLRootViewController presentationShouldBeAwesome]
    if([source isKindOfClass:[AAPLRootViewController class]] && [(AAPLRootViewController *)source presentationShouldBeAwesome])
    {
        presentationControllerClass = [AAPLCoolPresentationController class];
    }

jungchris

- (void)postJSONToSlack {
    
    NSLog(@"Post JSON to Slack");

    // BuiltInNM #random
//    NSMutableURLRequest *request = [NSMutableURLRequest
//                                    requestWithURL:[NSURL URLWithString:@"https://hooks.slack.com/services/"]];
    
    // This is for NMDevs to #random
    NSMutableURLRequest *request = [NSMutableURLRequest