if condition / switch case

Swift prevents any non-Boolean value in an if condition that requires a Bool.

Wrong:

let myCondition = 1

if myCondition {

    //Error

}

Correct:

let myCondition = 1

if myCondition == 1 {

    

}

or

let myCondition = true

if myCondition {

    

}

The switch case is as below:

var myCondition = 5 //Change this for different values

switch myCondition {
case 0:
    print("This is zero.")
case 1:
    print("myCondition is one.")
case 2,3:
    print("I like number two or three.")
case 4...10:
    print("Four to ten.\nfallthrough")
    fallthrough
default:
    print("The default case.")
    break
    //print("Print more")
}

//Console output: myCondition is one.

//No "break" is required for each case.
//Default condition is essential.
//Use comma if the cases share the same codes, e.g. case 2, 3:
//Use ... to represent consecutive values
//Write fallthrough if the case below needs to be run.

//Change this:

let myCondition = 7

//Console output: 

Four to ten.

The default case.

//"Print more" is not printed because of the break.


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IBM Swift Sandbox Example