tkreuder

abstract class FooBar {}
// 1. What is this?
// 2. How would you use this abstract class?
// 3. How can you inherit from it?
// 4. How can you get the actual instance, when the app is running?
// 5. Do you know other ways of sharing code?


class STMResult {}

tkreuder

import 'package:intl/intl.dart';

class GroupedData<T> {
  const GroupedData(
      {required this.startDate, this.endDate, required this.data});

  final DateTime startDate;
  final DateTime? endDate;
  final List<T> data;
}

tkreuder

  void main() {
    var myDouble = double.parse('123.45');
    assert(myDouble is double);
    print(myDouble);
  }

tkreuder

@interface ViewController ()

@property (nonatomic,strong) TestController *controller;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

tkreuder

 override func reverseTransformedValue(value: AnyObject!) -> AnyObject {
        let data = value as! NSData
        var components:[CGFloat] = [CGFloat](count: 4, repeatedValue:0)
        var length=sizeofValue(components)
        data.getBytes(&components, length: length)
        let color = UIColor(red: components[0],
            green: components[1],
            blue: components[2],
            alpha: components[3])
        

tkreuder

let calendar = NSCalendar.currentCalendar()
let components = calendar.components(NSCalendarUnit.CalendarUnitDay , fromDate:NSDate(timeIntervalSince1970: 0) , toDate:timeToShow , options:0 )

Cannot invoke 'components' with an argument list of type '(NSCalendarUnit, fromDate: NSDate, toDate: NSDate, options: Int)'

tkreuder

- (void)drawRect:(CGRect)rect
{
   
      contextRef = UIGraphicsGetCurrentContext();

    
    [self parseFile];
}
-(void)parseFile{
  //if certain condition draw e.g. circle at x/y