ArchiveURL

There is documentation for Foundation classes, structs, etc. in your Xcode installation which answers your question. Anyway, your line translates to:

static let ArchiveURL = DocumentsDirectory.appendingPathComponent("meals")

although the Swift coding convention is to use lower camel case for property/variable/constant/method/function names to make your code more comprehensible:

static let archiveURL = documentsDirectory.appendingPathComponent("meals")

If documentsDirectory is a NSURL, then archiveURL is a URL?.

If documentsDirectory is a URL, then archiveURL is a URL.

Here’s a neat trick: if you put code like this into a Swift 3 project, Xcode will give you fix-it suggestions with the new name. For example, for the following:

func foo() {
    let DocumentsDirectory: URL! = nil
    let ArchiveURL = DocumentsDirectory.URLByAppendingPathComponent("meals") 
}

You get two fix-its. The first is:

did you mean 'appendingPathComponent'?
public func appendingPathComponent(_ pathComponent: String, isDirectory: Bool) -> URL

The second is:

did you mean 'appendingPathComponent'?
public func appendingPathComponent(_ pathComponent: String) -> URL

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—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

nah still not workin'... I translated

    static let DocumentsDirectory = NSFileManager().URLsForDirectory(.DocumentDirectory, inDomains : .userDomainMask).first!
    static let ArchiveURL = DocumentsDirectory.URLByAppendingPathComponent("meals")

to

    static let DocumentsDirectory = FileManager().urls(for: .documentDirectory, in : .userDomainMask).first!

    static let archiveURL = documentsDirectory.appendingPathComponent("meals")

but still not working... gives me the "Value of type URL has no member 'AppendingPathComponent'"

Thanks man, you were right.

You're welcome 🙂