CODEWITHSUNDEEP
swifttuples
Anoop Vaidya
Anoop Vaidya

Reputation: 46533

Issues with tuple as a parameter/argument or return value

I am learning Swift3.0 after having a decade of experiences in Objective-C.

While working with tuples, I found it fancy to group many values in one. Once I started comparing it with struct of Obj-C.

But while passing it to a function or returning from a function the fanciness becomes a pain in ass!

You can not

  1. return the whole tuple
  2. pass tuple as a single value

In both the cases you have to break it into individual datatypes.

Am I getting it right from the above observations?

Upvotes: 1

Views: 971

Answers (2)

Yasir
Yasir

Reputation: 2372

Here is a solution using typealias so you don't have to use the tuple repeatedly:

typealias Complex = (Int, Int)

var complex1 = (2, 4)
var complex2 = (3, 5)

func addComplexNumbers(c1:Complex, c2:Complex) -> Complex {
    let sum = (c1.0 + c2.0, c1.1 + c2.1)
    return sum
}

print("Sum = \(addComplexNumbers(c1:complex1, c2:complex2))")

You can also use named parameters in your tuple, if you intend to retrieve the values separately:

typealias Complex = (x: Int, y: Int)

Upvotes: 3

Anoop Vaidya
Anoop Vaidya

Reputation: 46533

With the direction provided by Hamish, I got to know binding to a single value called "splatting" is purposefully removed. Looks somewhat in between passing four values instead of just two.

However we can use in this following way:

//This is an example of Complex number.
// 2+4i adding with 3+5i will become 5+9i

var complex1 = (2, 4)
var complex2 = (3, 5)

func addComplexNumbers(c1:(Int, Int), c2:(Int, Int)) -> (Int, Int){
    let sum = (c1.0+c2.0, c1.1+c2.1)
    return sum
}

print("Sum = \(addComplexNumbers(c1:complex1, c2:complex2))")

Upvotes: 0

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