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iOS Swift Functions and Optionals Functions Function Return Types

Posted by patrtoikua
patrtoikua
1,871 Points

Can you guys help me with this Return Type Function.

Thanks for help.

 //This code works:

func fullName(firstName: String, lastName: String) -> String {
    return firstName + lastName
}


let name = fullName("Jose Paulo ","Garcia")
println("Hello \(name)")

// or

fullName("Jose Paulo ","Garcia")



// This code does not work:

func fullName(firstName: String, lastName: String) -> String {
    return firstName + lastName
}



println("Hello \(fullName("Jose Paulo ", "Garcia"))")     //<----- expected separator

3 Answers

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

the multiple quotations are probably what are causing the problem. the compiler sees the first double quote in front of hello, then gets to the second double quote inside the function call and thinks thats one string.

you can try to use one type (single or double) for the outer quotes, and the other for the inner quotes:

println("Hello \(fullName('Jose Paulo ', 'Garcia'))")

I used double quotes for the outer quotations of the println string, and single quotes for the string parameters.

im not certain that will work though, as swift might require string to be enclosed in double quotes.

patrtoikua
patrtoikua
1,871 Points

I tried that one too but it didn't work. Thank you though.

Stephen Whitfield
Stephen Whitfield
16,771 Points

Your comment regarding strings needing to be enclosed with double quotes is correct. The only way around this that I've found is setting the function to some object or using string concatenation. 

func fullName(firstName: String, lastName: String) -> String {
    return firstName + lastName
}

println("Hello " + fullName("Roger ", "Barry"))
patrtoikua
patrtoikua
1,871 Points

Awesome it did work! Thanks a lot guys! Appreciate. Now I can finally sleep well tonight.

Chris Hedstrom
Chris Hedstrom
3,024 Points
Chris Hedstrom
Chris Hedstrom
3,024 Points

Thanks, I had exactly the same question and was setting it up the same way.

Anubhav Chopra
Anubhav Chopra
1,094 Points
Anubhav Chopra
Anubhav Chopra
1,094 Points

If you don't want to print the "Hello" you can - 

func fullName(firstName: String, lastName: String) -> String {
    return firstName + lastName
}

println(fullName("Roger","Barry"))