Try to return in ternary expression

Question

I have a Swift application.

I'm getting the error Expected expression after '?' in ternary expression from Xcode compiler

in

private func getContentPre(highlight: Highlight) -> String!

    {
        highlight.contentPre.count == 0 ? return ">" : return highlight.contentPre
    }

Apple docs says:

why isn't it possible to return in ternary expression like using if statement?

Answer 1

You should re-write your function like this. This will evaluate the count of the contentPre variable and return the appropriate response.

private func getContentPre(highlight: Highlight) -> String! {
    return highlight.contentPre.count == 0 ? ">" :  highlight.contentPre
}

However as it would appear that contentPre would be a String you should use .isEmpty as it is more performant that checking the length of a String

private func getContentPre(highlight: Highlight) -> String! {
    return highlight.contentPre.isEmpty ? ">" :  highlight.contentPre
}