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iOS Swift Functions and Optionals Parameters and Tuples Tuples

Vikram Babu
Vikram Babu
2,158 Points
Posted by Vikram Babu
Vikram Babu
2,158 Points

The code I wrote returns an error even though there is no errors when pasted into the playground. Why?

The code attached is the code I copied into playground, an no errors resulted. Does anyone know why this is the case? Does anyone have suggestions as to what I can do to fix the errors in my code?

tuples.swift 
func greeting(#person: String) -> (greeting: String, language: String) {
    let greeting = ("Hello \(person) ", "in English!")

    return greeting
}

var result = greeting(person: "Tom")
Rehaan I
Rehaan I
61 Points

swift var result = greeting(person: "Tom") needs to be part of a function. Basically, any line of code should be in scope. So if you put the line of code in a function, it should run. For example:

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

    return greeting
}
func foo()
{
     var result = greeting(person: "Tom")
}

All you need to do now is to run the foo() function.

1 Answer

Stepan Ulyanin
Stepan Ulyanin
11,318 Points
Stepan Ulyanin
Stepan Ulyanin
11,318 Points

Try making the greeting a tuple of variables you want to return and return the whole tuple 

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

    return (greeting, language)
}

var result = greeting(person: "Tom")