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iOS Swift Functions and Optionals Optionals What is an Optional?

The search function below returns a name if it is found in the array and an empty string if it is not found. Modify the

please help! i don't k\now what to do!

search.swift
func search(#name: String) -> String? {

search ""
    let names = ["Doc","Grumpy","Happy","Sleepy","Bashful","Sneezy","Dopey"]
    for n in names {
        if n == name {
            return n
        }
    }
    return (names)
}

1 Answer

Alexander Smith
Alexander Smith
10,476 Points

For the first part of this challenge they wanted you to make the function an optional and be able to return nil since thats the point of an optional

func search(#name: String) -> String? {
    let names = ["Doc","Grumpy","Happy","Sleepy","Bashful","Sneezy","Dopey"]
    for n in names {
        if n == name {
            return n
        } else {
          return nil
        }
    }
    return ""
}

Then they wanted you to use an if-let statement like such

if let result = search(name: "Doc") {
  println ("Found")
}

thanks you, did it, very helpful :)