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iOS Swift Functions and Optionals Functions Function Return Types

fullName function Extra Credit - programming an space into return

Below is the function I created for the extra credit:

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

fullName("Dave", "Lister")

It returns DaveLister.

How can you automatically include a space between firstName and lastName in the return without having to manually type a space when inputing the value for firstName "Dave"?

i.e. Looking for a solution where you do not have to input "Dave " with a manual space after the 'e'.


2 Answers

Walter Somerville
Walter Somerville
20,698 Points

Hi Frank,

One solution would be to return a formatted string, instead of concatenating the first and last names:

func fullName(firstName: String, lastName: String) -> String {
return "\(firstName) \(lastName)"

Thanks Walter - that's what I was looking for.

Sorry for the delay in answering - I literally got side-tracked off Swift and onto Website Design for a special project.

Appreciate your help.