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iOS Swift Functions and Optionals Parameters and Tuples Tuples

Posted by ayman abdallah
ayman abdallah
787 Points

i do not understand the instructions for this

func greeting(person: String) -> String {
    let language = "English"
    let greeting = "Hello \(person)"

    return greeting
}

2 Answers

Chris Shaw
Chris Shaw
26,676 Points
Chris Shaw
Chris Shaw
26,676 Points

Hi ayman,

See the below link, I made a lengthy reply to another user about tuples and a couple of extras which explain the overall fundamentals of them.

https://teamtreehouse.com/forum/not-sure-on-the-tuple-question-ios-swift-to-modify-the-greeting-to-return-both-language-and-greeting

Jason Wayne
Jason Wayne
11,688 Points
Jason Wayne
Jason Wayne
11,688 Points

Basically this is a method called greeting. It takes in a parameter called person, which is type String. And it returns a String value.

func greeting --> method called greeting (person:String) --> parameter/argument. name of argument is name, type of argument is String -> String --> return type of the method, which is type String

In the method you have to 2 constants, language and greeting which are both type String. The greeting constant takes in the argument person via the string interpolation.

So, when you call this greeting method, it'll be something like, greeting("Jason"). That would return a string, "Hello Jason".