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iOS Swift Basics (retired) Control Flow If Statement

Payton Dwight
Payton Dwight
5,751 Points
Posted by Payton Dwight
Payton Dwight
5,751 Points

declaration of card in cards

//: Playground - noun: a place where people can play

import UIKit

let cards=1...13

for card in cards
{
    if card==11
    {
        println("Jack")
    }
    else if card==12
    {
        println("Queen")
    }
    else if card==13
    {
        println("King")
    }
    else
    {
        println("Other card")
    }
}

// do i not have to declare card as a variable? is card just assumed to be whatever progressive number in the constant cards? is cards an array

1 Answer

Steve Hunter
Steve Hunter
57,712 Points

Hi Payton,

Yes, the local variable holding the value in each iteration of the range is self-declared by the contents of the range. The range is not an array but behaves very similarly. Documentation is here.

The range is "a collection of consecutive index values" - the documentation explains that, so essentially ourRange[i] == i so the value at the index is the index itself.

I hope that makes sense!

Steve.