optional array in swift code example

Example 1: swift declare optional values

// Optional values are types that can contain nil
var optionalValue: String? // this can be done with more than strings, but for this example that's what was used

Example 2: how to unwrap arrays with optional value in swift

let arrayOfOptionals: [String?] = ["Seems", "like", "an", nil, "of", "optionals"]
let arrayWithNoOptionals = arrayOfOptionals.compactMap { $0 }