swift - Perform assignment only if right side is not nil

Question

Is there a possibility to only perform an assignment (e.g. to a non-optional property) if the right hand side is not nil? I am looking for a one-line form for:

if let unwrapped = funcThatReturnsOptional() {
    object.nonOptionalProperty = unwrapped
}

Answer 1

A single expression with the same effect as your code is

funcThatReturnsOptional().map { object.nonOptionalProperty = $0 }

but your code is definitely better readable.

Here the map() method of Optional is used and the closure is executed only if the function does not return nil.