Return multiple values from a function in swift

Question

How do I return 3 separate data values of the same type Int  from a function in swift   I m attempting to return the time of day  I need to return the Hour  Minute and Second as separate integers  but all in one go from the same function  is this possible   I think I just don t understand the syntax for returning multiple values  This is the code I m using  I m having trouble with the last return  line   Any help would be greatly appreciated   func getTime   - gt  Int       let date   NSDate       let calendar   NSCalendar currentCalendar       let components   calendar components  CalendarUnitHour    CalendarUnitMinute    CalendarUnitSecond  fromDate  date      let hour   components hour     let minute   components minute     let second   components second     let times String       hour    minute    second        return hour  minute  second

User · Accepted Answer

Return a tuple   func getTime   - gt   Int  Int  Int                return   hour  minute  second      Then it s invoked as   let  hour  minute  second    getTime     or   let time   getTime   println  hour    time 0

User · Answer

Also   func getTime   - gt   hour  Int  minute  Int second  Int        let hour   1     let minute   2     let second   3     return   hour  minute  second      Then it s invoked as   let time   getTime   print  hour    time hour   minute    time minute   second    time second      This is the standard way how to use it in the book The Swift Programming Language written by Apple   or just like   let time   getTime   print  hour    time 0   minute    time 1   second    time 2      it s the same but less clearly

User · Answer

Swift 3  func getTime   - gt   hour  Int  minute  Int second  Int            let hour   1         let minute   20         let second   55         return  hour  minute  second          To use    let hour  min sec    self getTime   print hour min sec

User · Answer

Update Swift 4 1  Here we create a struct to implement the Tuple usage and validate the OTP text length  That needs to be of 2 fields for this example    struct ValidateOTP   var code  String var isValid  Bool    func validateTheOTP   - gt  ValidateOTP       let otpCode   String format          txtOtpField1 text   txtOtpField2 text       if otpCode length  lt  2           return ValidateOTP code  otpCode  isValid  false        else           return ValidateOTP code  otpCode  isValid  true            Usage   let isValidOTP   validateTheOTP       if isValidOTP isValid   print   valid OTP     else     self alert msg   Please fill the valid OTP   buttons    Ok    handler  nil          Hope it helps   Thanks

User · Answer

you should return three different values from this method and get these three in a single variable like this   func getTime  - gt   hour Int min Int sec Int     your code return  hour min sec      get the value in single variable  let getTime   getTime     now you can access the hour min and seconds simply by     ie   print  hour   getTime hour  min   getTime min  sec   getTime sec

User · Answer

By   Dhaval Nimavat     import UIKit     func weather diff country1 String temp1 Double country2 String temp2 Double - gt  c1 String c2 String diff Double           let c1   country1     let c2   country2     let diff   temp1 - temp2     return c1 c2 diff           let result       weather diff country1   India   temp1  45 5  country2   Canada   temp2     18 5     print  Weather difference between   result c1  and   result c2  is   result diff

[function] Return multiple values from a function in swift

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