Macros in Swift?
In this case you should add a default value for the "macro" parameters.
Swift 2.2 and higher
func log(message: String, function: String = #function, file: String = #file, line: Int = #line) { print("Message \"\(message)\" (File: \(file), Function: \(function), Line: \(line))")}log("Some message")Swift 2.1 and lower
func log(message: String, function: String = __FUNCTION__, file: String = __FILE__, line: Int = __LINE__) { print("Message \"\(message)\" (File: \(file.lastPathComponent), Function: \(function), Line: \(line))")}log("Some message")This is what fatalError and assert functions do.
There are no other macros except the conditional compilation already mentioned in another answer.
The Apple docs state that:
Declare simple macros as global constants, and translate complex macros into functions.
You can still use #if/#else/#endif - but my feeling is that they will not introduce macro functions, the language simply doesn't need it.