Hàm if cho mảng in IOS

if [1,2,3].contains( model.m_postion! ) {

                                            

}

Hàm đảo mảng ngẫu nhiên in IOS

func newShuffledArray(array:NSArray) -> NSArray {
    var mutableArray = array.mutableCopy() as! NSMutableArray
    var count = mutableArray.count
    if count>1 {
        for var i=count-1;i>0;--i{
            mutableArray.exchangeObjectAtIndex(i, withObjectAtIndex: Int(arc4random_uniform(UInt32(i+1))))
        }
    }
    return mutableArray as NSArray
}

Hàm lọc mảng

func FifterModelNews( md:[ModelNews]) -> [ModelNews]  {

    

        return md.filter({ (mdGet) -> Bool in

            return Bool(mdGet.m_object_id?.characters.count != 0)

        })

    }

Ham check Internet

import Foundation

import SystemConfiguration

func isInternetAvailable() -> Bool

{

    var zeroAddress = sockaddr_in()

    zeroAddress.sin_len = UInt8(MemoryLayout.size(ofValue: zeroAddress))

    zeroAddress.sin_family = sa_family_t(AF_INET)

    

    let defaultRouteReachability = withUnsafePointer(to: &zeroAddress) {

        $0.withMemoryRebound(to: sockaddr.self, capacity: 1) {zeroSockAddress in

            SCNetworkReachabilityCreateWithAddress(nil, zeroSockAddress)

        }

    }

    

    var flags = SCNetworkReachabilityFlags()

    if !SCNetworkReachabilityGetFlags(defaultRouteReachability!, &flags) {

        return false

    }

    let isReachable = flags.contains(.reachable)

    let needsConnection = flags.contains(.connectionRequired)

    return (isReachable && !needsConnection)

}

Lấy view từ StoryBroadId in IOS

static func getViewControllerFromStoryBroadId(idVC:String) -> UIViewController{

        

        let storyboard = UIStoryboard(name: "Main", bundle: nil)

        let controller = storyboard.instantiateViewController(withIdentifier: idVC)

        return controller

    }

Chờ thực hiện lệnh tiếp theo

func delay(_ delay: Double, closure: @escaping ()->()) {

        let when = DispatchTime.now() + delay

        DispatchQueue.main.asyncAfter(deadline: when, execute: closure)

    }

    

- Sử dụng : 

   print("1")

        

   delay( 10) {

        

      print("2")

        

   }

Kiểm tra có phải là email in IOS

  static func isValidEmail(testStr:String) -> Bool {

        // print("validate calendar: \(testStr)")

        let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,}"

        

        let emailTest = NSPredicate(format:"SELF MATCHES %@", emailRegEx)

        return emailTest.evaluate(with: testStr)

    }