arkilis

#import <Foundation/Foundation.h>

@protocol MyProtocol <NSObject>

@required
-(void) mustImplementMethod1;
-(void) mustImplementMethod2;
-(void) mustImplementMethod3;
-(void) mustImplementMethod4;

arkilis

#import <UIKit/UIKit.h>
#import "MyProtocol.h"

@interface ViewController : UIViewController <MyProtocol>

@end

arkilis

import UIKit

protocol WeatherServiceDelegate: class {
    func didCompleteRequest(result: String)
}


class WeatherService: NSObject {

    weak var delegate:WeatherServiceDelegate?

arkilis

// There are two ways of doing this:


// Way 1: use swift's multi-inheritance 

class ViewController: UIViewController, WeatherServiceDelegate {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

arkilis

class Foo(object):

    variable = 1

    def method(self, param):
        print "run instance method (%s,%s)" % (self, param)

    @classmethod
    def class_method1(cls, param):

arkilis

//CalculateChain.h
#import <Foundation/Foundation.h>

@interface CalculateChain : NSObject

@property (nonatomic) float result;

@property (readonly, nonatomic, copy) CalculateChain* (^add)(float num);
@property (readonly, nonatomic, copy) CalculateChain* (^minus)(float num);

arkilis

// NSNumber+CalculateChain2.h
#import <Foundation/Foundation.h>

@interface NSNumber (CalculateChain2)

-(NSNumber*(^)(float))add;
-(NSNumber*(^)(float))minus;
-(NSNumber*(^)(float))multiply;
-(NSNumber*(^)(float))divide;

arkilis

// view controller.h

#import <UIKit/UIKit.h>
#import "Item.h"

@interface ViewController : UIViewController 

@property (nonatomic, strong) NSString *myVal;

@end

arkilis

// item.h
#import <Foundation/Foundation.h>

@interface Item : NSObject

+(instancetype)sharedInstance;

@end

arkilis

#import "Item.h"

static id _instance;

@implementation Item

+ (id)allocWithZone:(struct _NSZone *)zone
{
    static dispatch_once_t onceToken;