func readLine(_: Bool) Returns a string read from standard input through the end of the current line or until EOF is reached. Standard input is interpreted as UTF-8. Invalid bytes are replaced by Unicode replacement characters. strippingNewline: If true, newline characters and character combinations are stripped from the result; otherwise, newline characters or character combinations are preserved. The default is true. Returns: The string of characters read from standard input. If EOF has already been reached when readLine() is called, the result is nil. Declaration func readLine(strippingNewline: Bool = default) -> String?